0001558370-23-008054 | 10-Q | XBRL Viewer | Everspin Technologies INC

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Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2023	May 01, 2023
Document And Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2023
Entity File Number	001-37900
Entity Registrant Name	Everspin Technologies, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-2640654
Entity Address, Address Line One	5670 W. Chandler Boulevard
Entity Address, Address Line Two	Suite 130
Entity Address, City or Town	Chandler
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85226
City Area Code	480
Local Phone Number	347-1111
Title of 12(b) Security	Common Stock, par value $0.0001
Trading Symbol	MRAM
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		20,616,102
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001438423
Amendment Flag	false

Condensed Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 24,211	$ 26,795
Accounts receivable, net	11,209	10,665
Inventory	6,279	6,683
Prepaid expenses and other current assets	485	604
Total current assets	42,184	44,747
Property and equipment, net	3,754	3,883
Right-of-use assets	6,359	6,641
Other assets	62	62
Total assets	52,359	55,333
Current liabilities:
Accounts payable	2,096	2,778
Accrued liabilities	2,076	3,533
Deferred revenue	898	821
Current portion of long-term debt		2,594
Lease liabilities, current portion	1,139	1,122
Other liabilities	50	27
Total current liabilities	6,259	10,875
Lease liabilities, net of current portion	5,288	5,580
Long-term income tax liability	214	214
Total liabilities	11,761	16,669
Commitments and contingencies (Note 5)
Stockholders' equity:
Preferred stock, $0.0001 par value per share; 5,000,000 shares authorized; no shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively
Common stock, $0.0001 par value per share; 100,000,000 shares authorized; 20,534,744 and 20,374,288 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively	2	2
Additional paid-in capital	186,537	185,364
Accumulated deficit	(145,941)	(146,702)
Total stockholders' equity	40,598	38,664
Total liabilities and stockholders' equity	$ 52,359	$ 55,333

Condensed Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2023	Dec. 31, 2022
Condensed Balance Sheets
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares Issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	20,534,744	20,374,288
Common stock, shares outstanding	20,534,744	20,374,288

Condensed Statements of Income and Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Total revenue	$ 14,846	$ 14,347
Total cost of sales	6,416	6,024
Gross profit	8,430	8,323
Operating expenses:
Research and development	3,199	2,436
General and administrative	3,220	2,729
Sales and marketing	1,315	1,134
Total operating expenses	7,734	6,299
Income from operations	696	2,024
Interest expense	(63)	(75)
Other income (expense), net	128	(14)
Net income and comprehensive income	$ 761	$ 1,935
Net income per common share, Basic	$ 0.04	$ 0.10
Net income per common share, Diluted	$ 0.04	$ 0.09
Weighted average shares of common stock outstanding, basic	20,450,994	19,896,654
Weighted average shares of common stock outstanding, diluted	20,832,074	20,726,193
Product sales
Total revenue	$ 13,777	$ 12,671
Total cost of sales	6,123	5,752
Licensing, royalty, patent and other revenue
Total revenue	1,069	1,676
Total cost of sales	$ 293	$ 272

Condensed Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	$ 1,160	$ 824
Research and Development
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	446	333
General and Administrative
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	611	371
Sales and Marketing
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	$ 103	$ 120

Condensed Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Total
Balance at Dec. 31, 2021	$ 2	$ 180,067	$ (152,831)	$ 27,238
Balance (in shares) at Dec. 31, 2021	19,858,460
Increase (Decrease) in Stockholders' Equity
Exercise of stock options		69		69
Exercise of stock options (in shares)	15,830
Issuance of common stock under stock incentive plans and exercise of stock options (in shares)	96,496
Stock-based compensation expense		824		824
Net income (loss)			1,935	1,935
Balance at Mar. 31, 2022	$ 2	180,960	(150,896)	30,066
Balance (in shares) at Mar. 31, 2022	19,970,786
Balance at Dec. 31, 2022	$ 2	185,364	(146,702)	38,664
Balance (in shares) at Dec. 31, 2022	20,374,288
Increase (Decrease) in Stockholders' Equity
Exercise of stock options		13		$ 13
Exercise of stock options (in shares)	3,020			3,020
Issuance of common stock under stock incentive plans and exercise of stock options (in shares)	157,436
Stock-based compensation expense		1,160		$ 1,160
Net income (loss)			761	761
Balance at Mar. 31, 2023	$ 2	$ 186,537	$ (145,941)	$ 40,598
Balance (in shares) at Mar. 31, 2023	20,534,744

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
Condensed Statements of Cash Flows - USD ($) $ in Thousands	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities
Net income	$ 761	$ 1,935
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	333	258
Stock-based compensation	1,160	824
Loss on prepayment and termination of credit facility	170
Non-cash warrant revaluation	23	(11)
Non-cash interest expense	26	32
Changes in operating assets and liabilities:
Accounts receivable	(544)	(2,047)
Inventory	404	188
Prepaid expenses and other current assets	119	126
Other assets		(13)
Accounts payable	125	267
Accrued liabilities	(1,457)	(2,014)
Deferred revenue	77	(502)
Lease liabilities	7	(14)
Net cash provided by (used in) operating activities	1,204	(971)
Cash flows from investing activities
Purchases of property and equipment	(1,011)	(22)
Net cash used in investing activities	(1,011)	(22)
Cash flows from financing activities
Payments on long-term debt	(2,790)	(600)
Proceeds from exercise of stock options	13	69
Net cash used in financing activities	(2,777)	(531)
Net decrease in cash and cash equivalents	(2,584)	(1,524)
Cash and cash equivalents at beginning of period	26,795	21,409
Cash and cash equivalents at end of period	24,211	19,885
Supplementary cash flow information:
Interest paid	37	43
Operating cash flows paid for operating leases	375	318
Financing cash flows paid for finance leases	$ 3	2
Non-cash investing and financing activities:
Right-of-use assets obtained in exchange for operating lease liabilities		3,350
Right-of-use assets obtained in exchange for finance lease liabilities		36
Purchases of property and equipment in accounts payable and accrued liabilities		$ 257

Organization and Nature of Business

3 Months Ended

Mar. 31, 2023

Organization and Nature of Business

Organization and Nature of Business

1. Organization and Nature of Business

Everspin Technologies, Inc. (the Company) was incorporated in Delaware on May 16, 2008. The Company’s magnetoresistive random-access memory (MRAM) solutions offer the persistence of non-volatile memory with the speed and endurance of random-access memory (RAM) and enable the protection of mission critical data particularly in the event of power interruption or failure. The Company’s MRAM solutions allow its customers in key markets, such as industrial, medical, automotive/transportation, aerospace and data center markets to design high performance, power efficient and reliable systems without the need for bulky batteries or capacitors.

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2023

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) and applicable rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. As permitted under those rules, certain footnotes or other financial information that are normally required by GAAP have been condensed or omitted, and accordingly the balance sheet as of December 31, 2022, has been derived from the audited financial statements at that date but does not include all of the information required by GAAP for complete financial statements. These unaudited interim condensed financial statements have been prepared on the same basis as the Company’s annual financial statements and, in the opinion of management, reflect all adjustments (consisting only of normal recurring adjustments) that are necessary for a fair statement of the Company’s financial information. The results of operations for the three months ended March 31, 2023, are not necessarily indicative of the results to be expected for the year ending December 31, 2023 or for any other interim period or for any other future year.

The accompanying condensed financial statements and related financial information should be read in conjunction with the audited financial statements and the related notes thereto for the year ended December 31, 2022, included in the Company’s Annual Report on Form 10-K filed with the SEC.

Use of Estimates

The preparation of the condensed financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the condensed financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, management evaluates its estimates, including those related to revenue recognition, fair value of assets and liabilities, inventory reserves, product return reserves, deferred tax assets and related valuation allowances, and stock-based compensation. The Company believes its estimates and assumptions are reasonable; however, actual results may differ from the Company’s estimates.

Accounts receivable, net

The Company establishes an allowance for product returns. The Company analyzes historical returns, current economic trends and changes in customer demand and acceptance of products when evaluating the adequacy of sales returns. Returns are processed as credits on future purchases and, as a result, the allowance is recorded against the balance of trade accounts receivable. In addition, the Company, from time to time, may establish an allowance for estimated price adjustments related to its distributor agreements. The Company estimates credits to distributors based on the historical rate of credits provided to distributors relative to sales and evaluation of current market conditions.

Accounts receivable, net consisted of the following (in thousands):


	March 31,		December 31,
	2023		2022
Trade accounts receivable	$	10,951	$	10,498
Unbilled accounts receivable		498		551
Allowance for product returns and price adjustments		(240)		(384)
Accounts receivable, net	$	11,209	$	10,665

Concentration of Credit Risk

Financial instruments that potentially expose the Company to a concentration of credit risk consist principally of cash and cash equivalents that are held by a financial institution in the United States and accounts receivable. Amounts on deposit with a financial institution may at times exceed federally insured limits. The Company maintains its cash accounts with high credit quality financial institutions and, accordingly, minimal credit risk exists with respect to the financial institutions.

Significant customers are those which represent more than 10% of the Company’s total revenue or net accounts receivable balance at each respective balance sheet date. For the purposes of this disclosure, the Company defines “customer” as the entity that is purchasing the products or licenses directly from the Company, which includes the distributors of the Company’s products in addition to end customers that the Company sells to directly. For each significant customer, revenue as a percentage of total revenue and accounts receivable as a percentage of total accounts receivable, net are as follows:


	Revenue				Accounts Receivable
	Three Months Ended March 31,				March 31,		December 31,
Customers	2023		2022		2023		2022
Customer A	*		18	%	15	%	30	%
Customer B	15	%	13	%	12	%	18	%
Customer C	14	%	*		*		*
Customer D	12	%	*		*		*
Customer E	18	%	*		22	%	*

*	Less than 10%

Fair Value of Financial Instruments

Fair value is defined as an exit price, representing the amount that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants. The framework for measuring fair value provides a three-tier hierarchy prioritizing inputs to valuation techniques used in measuring fair value as follows:

Level 1— Observable inputs such as quoted prices for identical assets or liabilities in active markets;

Level 2— Inputs, other than quoted prices for identical assets or liabilities in active markets, which are observable either directly or indirectly; and

Level 3— Unobservable inputs in which there is little or no market data requiring the reporting entity to develop its own assumptions.

As of March 31, 2023, based on Level 2 inputs and the borrowing rates available to the Company for loans with similar terms and consideration of the Company’s credit risk, the carrying value of the Company’s variable interest rate debt, excluding unamortized debt issuance costs, approximates fair value. The Company’s financial instruments consist of Level 1 assets and a Level 3 liability. Level 1 assets consist of highly liquid money market funds that are included in cash equivalents. The Company’s Level 3 liability consists of warrants issued in connection with the Company’s 2019 Credit Facility. The warrants expire on July 6, 2023.

The following tables sets forth the fair value of the Company’s financial assets and liabilities measured at fair value on a recurring basis (in thousands):


	March 31, 2023
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	24,225	$	—	$	—	$	24,225
Total assets measured at fair value	$	24,225	$	—	$	—	$	24,225

Liabilities:
Warrant liability	$	—	$	—	$	50	$	50
Total liabilities measured at fair value	$	—	$	—	$	50	$	50


	December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	26,812	$	—	$	—	$	26,812
Total assets measured at fair value	$	26,812	$	—	$	—	$	26,812

Liabilities:
Warrant liability	$	—	$	—	$	27	$	27
Total liabilities measured at fair value	$	—	$	—	$	27	$	27

Recently Adopted Accounting Pronouncements

In June 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which amends the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. As the Company is a smaller reporting company, ASU 2016-13 is effective for the Company’s annual reporting periods, and interim periods within those years, beginning after December 15, 2022, and requires a cumulative effect adjustment to the balance sheet as of the beginning of the first reporting period in which the guidance is effective. In April 2019, the FASB issued ASU 2019-04, Codification Improvements Financial Instruments-Credit Losses (Topic 326). ASU 2019-04 provides narrow-scope amendments to help apply ASU 2016-13, and is effective with the adoption of ASU 2016-13. The Company adopted ASU 2016-13 and ASU 2019-04 on January 1, 2023, and it did not have a material impact on its condensed financial statements.

The Company reviewed all other recently issued accounting pronouncements and concluded that they were either not applicable or not expected to have a significant impact to the condensed financial statements.

Revenue

3 Months Ended

Mar. 31, 2023

Revenue.

Revenue

3. Revenue

The Company sells products to its distributors and original equipment manufacturers (OEMs). The Company also recognizes revenue under licensing, patent, and royalty agreements with some customers.

The following table presents the Company’s revenues disaggregated by sales channel (in thousands):


	Three Months Ended March 31,
	2023		2022
Distributor	$	12,842		10,794
Non-distributor		2,004		3,553
Total revenue	$	14,846	$	14,347

The following table presents the Company’s revenues disaggregated by timing of recognition (in thousands):


	Three Months Ended March 31,
	2023		2022
Point in time	$	13,870		13,646
Over time		976		701
Total revenue	$	14,846	$	14,347

The following table presents the Company’s revenues disaggregated by type (in thousands):


	Three Months Ended March 31,
	2023		2022
Product sales	$	13,777	$	12,671
Licensing		918		575
Royalties		93		400
Other revenue		58		701
Total revenue	$	14,846	$	14,347

The Company recognizes revenue in three primary geographic regions: Asia-Pacific (APAC); North America; and Europe, Middle East and Africa (EMEA). The Company recognizes revenue by geography based on the region in which the Company’s products are sold, and not to where the end products in which they are assembled are shipped. The Company’s revenue by region for the periods indicated was as follows (in thousands):


	Three Months Ended March 31,
	2023		2022
APAC	$	7,591	$	9,234
North America		2,925		3,105
EMEA		4,330		2,008
Total revenue	$	14,846	$	14,347

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI https://asc.fasb.org/topic&trid=49130388

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Balance Sheet Components

3 Months Ended

Mar. 31, 2023

Balance Sheet Components

Balance Sheet Components

4. Balance Sheet Components

Inventory

Inventory consisted of the following (in thousands):


	March 31,		December 31,
	2023		2022
Raw materials	$	530	$	666
Work-in-process		4,631		4,746
Finished goods		1,118		1,271
Total inventory	$	6,279	$	6,683

Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):


	March 31,		December 31,
	2023		2022
Payroll-related expenses	$	1,165	$	2,886
Inventory		406		185
Other		505		462
Total accrued liabilities	$	2,076	$	3,533

Deferred Revenue

During the year ended December 31, 2021, the Company executed contractual arrangements with a customer for the development of a RAD-Hard product, consisting of a technology license, design license agreement, and development

subcontract (RAD-Hard 1). The Company does not share in the rights to future revenues or royalties. The total arrangements are for $6.5 million in consideration.

The Company concluded these contractual arrangements represent one arrangement and evaluated its promises to the customer and whether the performance obligations granted under the arrangement were distinct. The licenses provided to the customer are not transferable, are of limited value without the promised development services, and the customer cannot benefit from the license agreements without the specific obligated services in the development subcontract, as there is strong interdependency between the licenses and the development subcontract. Accordingly, the Company determined the licenses were not distinct within the context of the contract and combined the license with other performance obligations. The total transaction price of $6.5 million was allocated to the single performance obligation.

The Company recognizes revenue related to the performance obligations over time using the input method based on costs incurred to date relative to the total expected costs of the contract and began recognizing revenue in the second quarter of 2021 over the contract period. This method depicts performance under the contract and requires the Company to make estimates about the future costs expected to be incurred to perform under the contact, including labor and material costs.

As of March 31, 2023, the Company has billed $6.0 million for the performance under the RAD-Hard 1 contractual agreements. Under the input method of recognition, the Company has recognized $0.2 million in revenue for the three-months ending March 31, 2023, and $5.2 million in revenue since inception of the contractual agreements. As a result, the Company has recorded $0.8 million in deferred revenue as of March 31, 2023. The Company expects to recognize the remaining $1.3 million of the transaction price as services are performed throughout the contractual period and performance is expected to be complete in the year ended December 31, 2024.

During the year ended December 31, 2022, the Company executed a contractual arrangement with a customer for the development of a strategic radiation hardened field programmable gate array product, consisting of a technology license to provide design and development services under the contractual agreement (RAD-Hard 2). The Company does not share in the rights to future revenues or royalties. The total arrangement is for $6.5 million in consideration and services are expected to be performed through the year ended December 31, 2024, subject to certain termination and extension provisions defined in the arrangement. The accounting for this contract follows the same revenue recognition as the RAD-Hard 1 contractual agreements. As of March 31, 2023, the Company has billed $1.1 million for the performance under the RAD-Hard 2 contractual agreement. Under the input method of recognition, the Company has recognized $0.7 million in revenue for the three-months ending March 31, 2023, and $1.0 million in revenue since inception of the contractual agreement. As a result, the Company has recorded $0.1 million in deferred revenue as of March 31, 2023.

Leases

3 Months Ended

Mar. 31, 2023

Leases

Leases

5. Leases

Operating leases consist primarily of office space expiring at various dates through 2029. Finance leases relate to a server lease expiring in January 2025. The Company’s lease agreements do not contain any material residual value guarantees or material restrictive covenants.

The undiscounted future non-cancellable lease payments under the Company’s operating and finance leases were as follows (in thousands):


As of March 31, 2023	Amount
2023	$	1,048
2024		1,411
2025		1,416
2026		1,431
2027		1,314
Thereafter		566
Total lease payments		7,186
Less: imputed interest		(759)
Total lease liabilities		6,427
Less: current portion of lease liabilities		(1,139)
Total lease liabilities, net of current portion	$	5,288

Other information related to the Company’s operating lease liabilities was as follows:


	March 31,		December 31,
	2023		2022
Weighted-average remaining lease term (years)	5.11		5.35
Weighted-average discount rate	4.50	%	4.50	%

Other information related to the Company’s finance lease liabilities was as follows:


	March 31,		December 31,
	2023		2022
Weighted-average remaining lease term (years)	1.84		2.09
Weighted-average discount rate	4.50	%	4.50	%

Debt

3 Months Ended

Mar. 31, 2023

Debt

Debt

6. Debt

2019 Credit Facility

In March 2023, the 2019 Credit Facility, consisting of the Company’s Term Loan and Line of Credit, was paid in full, and there was no outstanding balance as of March 31, 2023. The Company paid an early termination and prepayment fee of $170,000, which was recorded within other income (expense) within the condensed statements of income and comprehensive income for the three months ended March 31, 2023.

The Company was in compliance with all covenants throughout the 2019 Credit Facility payoff date in March 2023.

The amortization of the debt issuance costs and accretion of the debt discount is included in interest expense within the condensed statements of income and comprehensive income and included in non-cash interest expense within the statement of cash flows.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI https://asc.fasb.org/topic&trid=2208564

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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+ Details

Stock-Based Compensation

3 Months Ended

Mar. 31, 2023

Stock-Based Compensation

Stock-Based Compensation

7. Stock-Based Compensation

Summary of Stock Option and Award Activity

The following table summarizes the stock option and award activity for the three months ended March 31, 2023:


		Options Outstanding
			Weighted-		Weighted-
	Options and		Average		Average	Aggregate
	Awards		Exercise		Remaining	Intrinsic
	Available for	Number of	Price Per		Contractual	Value
	Grant	Options	Share		Life (years)	(In thousands)
Balance—December 31, 2022	689,472	1,994,726	$	5.88	7.8	$	1,275
Authorized	611,228
RSUs granted	(607,886)
RSUs cancelled/forfeited	—
Options granted	(3,750)	3,750	$	6.33
Options exercised	—	(3,020)	$	4.40		$	8
Options cancelled/forfeited	2,898	(2,898)	$	7.08
Balance—March 31, 2023	691,962	1,992,558	$	5.89	7.6	$	2,749
Options exercisable—March 31, 2023		1,130,079	$	5.64	7.0	$	1,763

The total grant date fair value of options vested was $1.9 million and $1.0 million during the three months ended March 31, 2023 and 2022, respectively. The weighted-average grant date fair value of options granted was $3.20 and $5.41 per share during the three months ended March 31, 2023 and 2022, respectively.

As of March 31, 2023, there was $3.4 million of total unrecognized stock-based compensation expense related to unvested options which is expected to be recognized over a weighted-average period of 2.2 years. Compensation cost capitalized within inventory at March 31, 2023 and 2022 was not material.

2016 Employee Stock Purchase Plan

In January 2023, there was an increase of 203,742 shares reserved for issuance under the Company’s Employee Stock Purchase Plan (ESPP) pursuant to the terms of the ESPP. The Company had 977,879 shares available for future issuance under the Company’s ESPP as of March 31, 2023. Employees purchased no shares during the three months ended March 31, 2023 and 2022, respectively.

Restricted Stock Units

The following table summarizes restricted stock units (RSUs) activity for the three months ended March 31, 2023:


	RSUs Outstanding
		Weighted-
		Average
	Number of	Grant Date
	Restricted Stock	Fair Value Per
	Units	Share
Balance—December 31, 2022	656,646	$	6.45
Granted	607,886	$	6.33
Vested	(157,436)	$	6.37
Cancelled/forfeited	—	$	—
Balance—March 31, 2023	1,107,096	$	6.39

The fair value of RSUs is determined on the date of grant based on the market price of the Company’s common stock on that date.

As of March 31, 2023, there was $6.4 million of unrecognized stock-based compensation expense related to RSUs to be recognized over a weighted-average period of 2.3 years. Compensation cost capitalized within inventory at March 31, 2023 and 2022 was not material.

Significant Agreements

3 Months Ended

Mar. 31, 2023

Significant Agreements

Significant Agreements

8. Significant Agreements

GLOBALFOUNDRIES, Inc. Joint Development Agreement

Since October 17, 2014, the Company has participated in a joint development agreement (JDA) with GLOBALFOUNDRIES Inc. (GF), a semiconductor foundry, for the joint development of Spin-transfer Torque MRAM (STT-MRAM), technology to produce a family of discrete and embedded MRAM technologies. The term of the agreement is until the completion, termination, or expiration of the last statement of work entered into pursuant to the joint development agreement. The Company entered into a Statement of Work (SOW) and an Amendment to the SOW, under the JDA with GF effective August 2016 and June 2018, respectively. The agreement was extended on December 31, 2019 to include a new phase of support for 12nm MRAM development.

Under the current JDA extension terms, each party licenses its relevant intellectual property to the other party. For certain jointly developed works, the parties have agreed to follow an invention allocation procedure to determine ownership. In addition, GF possesses the exclusive right to manufacture the Company’s discrete and embedded STT-MRAM devices developed pursuant to the agreement until the earlier of three years after the qualification of the MRAM device for a particular technology node or four years after the completion of the relevant statement of work under which the device was developed. For the same exclusivity period associated with the relevant device, GF agreed not to license intellectual property developed in connection with the JDA to named competitors of the Company.

Generally, unless otherwise specified in the agreement or a statement of work, the Company and GF share project costs, which do not include personnel or production qualification costs, under the JDA. If GF manufactures, sells or transfers to customers wafers containing production quantified STT-MRAM devices that utilize certain design information, GF will be required to pay the Company a royalty.

Net Income Per Common Share

3 Months Ended

Mar. 31, 2023

Net Income Per Common Share

Net Income Per Common Share

9. Net Income Per Common Share

Basic net income per common share is calculated by dividing the net income by the weighted-average number of shares of common stock outstanding for the period less shares subject to repurchase, without consideration of potentially dilutive securities. Diluted earnings per share is calculated using the treasury stock method by dividing net income by the total weighted average shares of common stock outstanding in addition to the potential impact of dilutive securities including restricted stock units, warrants, and options. In periods with a net loss, potentially dilutive securities are excluded from the Company’s calculation of earnings per share as their inclusion would have an antidilutive effect.

The following tables set forth the computation of basic and diluted net income per share attributable to common stockholders (in thousands, except share and per share amounts):

Basic EPS


	Three Months Ended March 31,
	2023		2022
Numerator:
Net income	$	761	$	1,935
Denominator:
Weighted-average shares of common stock outstanding, basic		20,450,994		19,896,654
Net income per common share, basic	$	0.04	$	0.10

Diluted EPS


	Three Months Ended March 31,
	2023		2022
Numerator:
Net income	$	761	$	1,935
Less: warrant liability fair value loss (gain) recognized		23		(11)
Net income attributable to common stockholders, diluted	$	784	$	1,924
Denominator:
Weighted-average shares of common stock outstanding, basic		20,450,994		19,896,654
Dilutive effect of stock options and RSUs		381,080		829,539
Weighted-average shares of common stock outstanding, diluted		20,832,074		20,726,193
Net income per common share, diluted	$	0.04	$	0.09

Potentially dilutive securities representing 1.6 million and 0.3 million stock options and RSUs that were outstanding during the three-months ended of March 31, 2023, and 2022, respectively, were excluded from the computation of diluted earnings per common share during these periods as their inclusion would have an antidilutive effect.

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2023

Summary of Significant Accounting Policies

Basis of Presentation

Use of Estimates

Accounts Receivable, Net

Accounts receivable, net

Accounts receivable, net consisted of the following (in thousands):


	March 31,		December 31,
	2023		2022
Trade accounts receivable	$	10,951	$	10,498
Unbilled accounts receivable		498		551
Allowance for product returns and price adjustments		(240)		(384)
Accounts receivable, net	$	11,209	$	10,665

Concentration of Credit Risk


	Revenue				Accounts Receivable
	Three Months Ended March 31,				March 31,		December 31,
Customers	2023		2022		2023		2022
Customer A	*		18	%	15	%	30	%
Customer B	15	%	13	%	12	%	18	%
Customer C	14	%	*		*		*
Customer D	12	%	*		*		*
Customer E	18	%	*		22	%	*

*	Less than 10%

Fair Value of Financial Instruments

Level 1— Observable inputs such as quoted prices for identical assets or liabilities in active markets;

Level 2— Inputs, other than quoted prices for identical assets or liabilities in active markets, which are observable either directly or indirectly; and

Level 3— Unobservable inputs in which there is little or no market data requiring the reporting entity to develop its own assumptions.

The following tables sets forth the fair value of the Company’s financial assets and liabilities measured at fair value on a recurring basis (in thousands):


	March 31, 2023
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	24,225	$	—	$	—	$	24,225
Total assets measured at fair value	$	24,225	$	—	$	—	$	24,225

Liabilities:
Warrant liability	$	—	$	—	$	50	$	50
Total liabilities measured at fair value	$	—	$	—	$	50	$	50


	December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	26,812	$	—	$	—	$	26,812
Total assets measured at fair value	$	26,812	$	—	$	—	$	26,812

Liabilities:
Warrant liability	$	—	$	—	$	27	$	27
Total liabilities measured at fair value	$	—	$	—	$	27	$	27

Recently Adopted Accounting Pronouncements

Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2023

Summary of Significant Accounting Policies

Schedule of accounts receivable net

Accounts receivable, net consisted of the following (in thousands):


	March 31,		December 31,
	2023		2022
Trade accounts receivable	$	10,951	$	10,498
Unbilled accounts receivable		498		551
Allowance for product returns and price adjustments		(240)		(384)
Accounts receivable, net	$	11,209	$	10,665

Schedule of revenue and accounts receivable for each significant customer


	Revenue				Accounts Receivable
	Three Months Ended March 31,				March 31,		December 31,
Customers	2023		2022		2023		2022
Customer A	*		18	%	15	%	30	%
Customer B	15	%	13	%	12	%	18	%
Customer C	14	%	*		*		*
Customer D	12	%	*		*		*
Customer E	18	%	*		22	%	*

*	Less than 10%

Schedule of fair value of financial assets and liabilities measured on recurring basis

The following tables sets forth the fair value of the Company’s financial assets and liabilities measured at fair value on a recurring basis (in thousands):


	March 31, 2023
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	24,225	$	—	$	—	$	24,225
Total assets measured at fair value	$	24,225	$	—	$	—	$	24,225

Liabilities:
Warrant liability	$	—	$	—	$	50	$	50
Total liabilities measured at fair value	$	—	$	—	$	50	$	50


	December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	26,812	$	—	$	—	$	26,812
Total assets measured at fair value	$	26,812	$	—	$	—	$	26,812

Liabilities:
Warrant liability	$	—	$	—	$	27	$	27
Total liabilities measured at fair value	$	—	$	—	$	27	$	27

Revenue (Tables)

3 Months Ended

Mar. 31, 2023

Revenue.

Schedule of disaggregation of revenue

The following table presents the Company’s revenues disaggregated by sales channel (in thousands):


	Three Months Ended March 31,
	2023		2022
Distributor	$	12,842		10,794
Non-distributor		2,004		3,553
Total revenue	$	14,846	$	14,347

The following table presents the Company’s revenues disaggregated by timing of recognition (in thousands):


	Three Months Ended March 31,
	2023		2022
Point in time	$	13,870		13,646
Over time		976		701
Total revenue	$	14,846	$	14,347

The following table presents the Company’s revenues disaggregated by type (in thousands):


	Three Months Ended March 31,
	2023		2022
Product sales	$	13,777	$	12,671
Licensing		918		575
Royalties		93		400
Other revenue		58		701
Total revenue	$	14,846	$	14,347

The Company recognizes revenue by geography based on the region in which the Company’s products are sold, and not to where the end products in which they are assembled are shipped. The Company’s revenue by region for the periods indicated was as follows (in thousands):


	Three Months Ended March 31,
	2023		2022
APAC	$	7,591	$	9,234
North America		2,925		3,105
EMEA		4,330		2,008
Total revenue	$	14,846	$	14,347

Balance Sheet Components (Tables)

3 Months Ended

Mar. 31, 2023

Balance Sheet Components

Schedule of Inventory

Inventory consisted of the following (in thousands):


	March 31,		December 31,
	2023		2022
Raw materials	$	530	$	666
Work-in-process		4,631		4,746
Finished goods		1,118		1,271
Total inventory	$	6,279	$	6,683

Schedule of accrued liabilities

Accrued liabilities consisted of the following (in thousands):


	March 31,		December 31,
	2023		2022
Payroll-related expenses	$	1,165	$	2,886
Inventory		406		185
Other		505		462
Total accrued liabilities	$	2,076	$	3,533

Leases (Tables)

3 Months Ended

Mar. 31, 2023

Leases

Schedule of Undiscounted future non-cancellable lease payments

The undiscounted future non-cancellable lease payments under the Company’s operating and finance leases were as follows (in thousands):


As of March 31, 2023	Amount
2023	$	1,048
2024		1,411
2025		1,416
2026		1,431
2027		1,314
Thereafter		566
Total lease payments		7,186
Less: imputed interest		(759)
Total lease liabilities		6,427
Less: current portion of lease liabilities		(1,139)
Total lease liabilities, net of current portion	$	5,288

Schedule of supplemental information

Other information related to the Company’s operating lease liabilities was as follows:


	March 31,		December 31,
	2023		2022
Weighted-average remaining lease term (years)	5.11		5.35
Weighted-average discount rate	4.50	%	4.50	%

Other information related to the Company’s finance lease liabilities was as follows:


	March 31,		December 31,
	2023		2022
Weighted-average remaining lease term (years)	1.84		2.09
Weighted-average discount rate	4.50	%	4.50	%

Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2023

Stock-Based Compensation

Summary of stock option activity


		Options Outstanding
			Weighted-		Weighted-
	Options and		Average		Average	Aggregate
	Awards		Exercise		Remaining	Intrinsic
	Available for	Number of	Price Per		Contractual	Value
	Grant	Options	Share		Life (years)	(In thousands)
Balance—December 31, 2022	689,472	1,994,726	$	5.88	7.8	$	1,275
Authorized	611,228
RSUs granted	(607,886)
RSUs cancelled/forfeited	—
Options granted	(3,750)	3,750	$	6.33
Options exercised	—	(3,020)	$	4.40		$	8
Options cancelled/forfeited	2,898	(2,898)	$	7.08
Balance—March 31, 2023	691,962	1,992,558	$	5.89	7.6	$	2,749
Options exercisable—March 31, 2023		1,130,079	$	5.64	7.0	$	1,763

Schedule of restricted stock unit activity


	RSUs Outstanding
		Weighted-
		Average
	Number of	Grant Date
	Restricted Stock	Fair Value Per
	Units	Share
Balance—December 31, 2022	656,646	$	6.45
Granted	607,886	$	6.33
Vested	(157,436)	$	6.37
Cancelled/forfeited	—	$	—
Balance—March 31, 2023	1,107,096	$	6.39

Net Income Per Common Share (Tables)

3 Months Ended

Mar. 31, 2023

Net Income Per Common Share

Computation of basic net income (loss) per share

The following tables set forth the computation of basic and diluted net income per share attributable to common stockholders (in thousands, except share and per share amounts):

Basic EPS


	Three Months Ended March 31,
	2023		2022
Numerator:
Net income	$	761	$	1,935
Denominator:
Weighted-average shares of common stock outstanding, basic		20,450,994		19,896,654
Net income per common share, basic	$	0.04	$	0.10

Computation of diluted net income (loss) per share

The following tables set forth the computation of basic and diluted net income per share attributable to common stockholders (in thousands, except share and per share amounts):

Diluted EPS


	Three Months Ended March 31,
	2023		2022
Numerator:
Net income	$	761	$	1,935
Less: warrant liability fair value loss (gain) recognized		23		(11)
Net income attributable to common stockholders, diluted	$	784	$	1,924
Denominator:
Weighted-average shares of common stock outstanding, basic		20,450,994		19,896,654
Dilutive effect of stock options and RSUs		381,080		829,539
Weighted-average shares of common stock outstanding, diluted		20,832,074		20,726,193
Net income per common share, diluted	$	0.04	$	0.09

Summary of Significant Accounting Policies - Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accounts receivable
Trade accounts receivable	$ 10,951	$ 10,498
Unbilled accounts receivable	498	551
Allowance for product returns and price adjustments	(240)	(384)
Accounts receivable, net	$ 11,209	$ 10,665

Summary of Significant Accounting Policies - Schedule of Revenue and Accounts Receivable for Each Significant Customer (Details) - Customer Concentration Risk	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Revenue \| Customer A
Concentration risk
Concentration risk percentage		18.00%
Revenue \| Customer A \| Maximum [Member]
Concentration risk
Concentration risk percentage	10.00%
Revenue \| Customer B
Concentration risk
Concentration risk percentage	15.00%	13.00%
Revenue \| Customer C
Concentration risk
Concentration risk percentage	14.00%
Revenue \| Customer C \| Maximum [Member]
Concentration risk
Concentration risk percentage		10.00%
Revenue \| Customer D
Concentration risk
Concentration risk percentage	12.00%
Revenue \| Customer D \| Maximum [Member]
Concentration risk
Concentration risk percentage		10.00%
Revenue \| Customer E
Concentration risk
Concentration risk percentage	18.00%
Revenue \| Customer E \| Maximum [Member]
Concentration risk
Concentration risk percentage		10.00%
Accounts Receivable, net \| Customer A
Concentration risk
Concentration risk percentage	15.00%		30.00%
Accounts Receivable, net \| Customer B
Concentration risk
Concentration risk percentage	12.00%		18.00%
Accounts Receivable, net \| Customer C \| Maximum [Member]
Concentration risk
Concentration risk percentage	10.00%		10.00%
Accounts Receivable, net \| Customer D \| Maximum [Member]
Concentration risk
Concentration risk percentage	10.00%		10.00%
Accounts Receivable, net \| Customer E
Concentration risk
Concentration risk percentage	22.00%
Accounts Receivable, net \| Customer E \| Maximum [Member]
Concentration risk
Concentration risk percentage			10.00%

Summary of Significant Accounting Policies - Schedule of Fair Value of Financial Assets and Liabilities Measured on Recurring Basis (Details) - Recurring - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value
Total assets measured at fair value	$ 24,225	$ 26,812
Warrant liability	50	27
Total liabilities measured at fair value	50	27
Level 1
Fair Value
Total assets measured at fair value	24,225	26,812
Level 3
Fair Value
Warrant liability	50	27
Total liabilities measured at fair value	50	27
Money Market Funds
Fair Value
Money market funds	24,225	26,812
Money Market Funds \| Level 1
Fair Value
Money market funds	$ 24,225	$ 26,812

Revenue - Disaggregated by Sales Channel (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue
Revenue	$ 14,846	$ 14,347
Distributor
Disaggregation of Revenue
Revenue	12,842	10,794
Non-distributor
Disaggregation of Revenue
Revenue	$ 2,004	$ 3,553

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9038-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130543-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

+ Details

Revenue - Disaggregated by Timing of Recognition (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue
Revenue	$ 14,846	$ 14,347
Point in time
Disaggregation of Revenue
Revenue	13,870	13,646
Over time
Disaggregation of Revenue
Revenue	$ 976	$ 701

- Definition

+ References

+ Details

Revenue - Disaggregated by Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue
Revenue	$ 14,846	$ 14,347
Product sales
Disaggregation of Revenue
Revenue	13,777	12,671
Licensing
Disaggregation of Revenue
Revenue	918	575
Royalties
Disaggregation of Revenue
Revenue	93	400
Other revenue
Disaggregation of Revenue
Revenue	$ 58	$ 701

- Definition

+ References

+ Details

Revenue - Disaggregated by Geographic Region (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) region	Mar. 31, 2022 USD ($)
Disaggregation of Revenue
Number of primary geographic regions \| region	3
Revenue	$ 14,846	$ 14,347
APAC
Disaggregation of Revenue
Revenue	7,591	9,234
North America
Disaggregation of Revenue
Revenue	2,925	3,105
EMEA
Disaggregation of Revenue
Revenue	$ 4,330	$ 2,008

- Definition

+ References

+ Details

Balance Sheet Components - Schedule of Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Inventory
Raw materials	$ 530	$ 666
Work-in-process	4,631	4,746
Finished goods	1,118	1,271
Total inventory	$ 6,279	$ 6,683

Balance Sheet Components - Schedule of Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accrued liabilities
Payroll-related expenses	$ 1,165	$ 2,886
Inventory	406	185
Other	505	462
Total accrued liabilities	$ 2,076	$ 3,533

Balance Sheet Components - Deferred Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended		15 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Mar. 31, 2023
Deferred Revenue
Revenue	$ 14,846	$ 14,347
Deferred licensing revenue	898		$ 821		$ 898
RAD Hard product 1 agreement
Deferred Revenue
Total amount of consideration to be received				$ 6,500
Amount billed for the performance under contractual agreements	6,000
Revenue	200				5,200
Deferred licensing revenue	800				800
Revenue expected to be recognized	1,300				1,300
RAD Hard product 2 agreement
Deferred Revenue
Total amount of consideration to be received			$ 6,500
Amount billed for the performance under contractual agreements	1,100
Revenue	700				1,000
Deferred licensing revenue	$ 100				$ 100

- Definition

+ References

+ Details

Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Future lease payments
2023	$ 1,048
2024	1,411
2025	1,416
2026	1,431
2027	1,314
Thereafter	566
Total lease payments	7,186
Less: imputed interest	(759)
Total lease liabilities	6,427
Less: current portion of lease liabilities	(1,139)	$ (1,122)
Total lease liabilities, net of current portion	$ 5,288	$ 5,580
Other lease information
Operating lease weighted-average remaining lease term (years)	5 years 1 month 9 days	5 years 4 months 6 days
Operating lease weighted-average discount rate	4.50%	4.50%
Finance lease weighted-average remaining lease term (years)	1 year 10 months 2 days
Finance lease weighted-average discount rate	4.50%

Debt - Credit Facility (Details) - USD ($)	3 Months Ended
Debt - Credit Facility (Details) - USD ($)	Mar. 31, 2023	Mar. 31, 2022
Debt
Gain on extinguishment of debt	$ (170,000)
Other income (expense)	128,000	$ (14,000)
2019 Credit Facility
Debt
Prepayment fee	170,000
Outstanding balance	$ 0

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

Stock-Based Compensation - Summary of Options and Awards Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Stock-based compensation
Options and Awards Available for Grant, Outstanding, Beginning balance	689,472
Options and Awards Available for Grant, Options authorized	611,228
Options and Awards Available for Grant, RSUs granted	(607,886)
Options and Awards Available for Grant, Options granted	(3,750)
Options and Awards Available for Grant, Options cancelled/forfeited	2,898
Options and Awards Available for Grant, Outstanding, Ending balance	691,962	689,472
Number of Options, Outstanding, Beginning balance	1,994,726
Number of Options, Options granted	3,750
Number of Options, Options exercised	(3,020)
Number of Options, Options cancelled/forfeited	(2,898)
Number of Options, Outstanding, Ending balance	1,992,558	1,994,726
Number of Options, exercisable	1,130,079
Weighted - Average Exercise Price Per Share, Options outstanding, Beginning balance	$ 5.88
Weighted - Average Exercise Price Per Share, Options granted	6.33
Weighted - Average Exercise Price Per Share, Options exercised	4.40
Weighted - Average Exercise Price Per Share, Options cancelled/forfeited	7.08
Weighted - Average Exercise Price Per Share, Options outstanding, Ending balance	5.89	$ 5.88
Weighted - Average Exercise Price Per Share, Options exercisable	$ 5.64
Weighted - Average Remaining Contractual Life, Options outstanding	7 years 7 months 6 days	7 years 9 months 18 days
Weighted - Average Remaining Contractual Life, Options exercisable	7 years
Aggregate Intrinsic Value, Options outstanding	$ 2,749	$ 1,275
Aggregate Intrinsic Value, Options exercised	8
Aggregate Intrinsic Value, Options exercisable	$ 1,763

Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
	Jan. 31, 2023	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Share-based Compensation
Total grant date fair value of options vested		$ 1.9	$ 1.0
Weighted-average grant date fair value of options granted		$ 3.20	$ 5.41
Shares available for future issuance (in shares)		691,962		689,472
Number of stock options granted (in shares)		3,750
Options remained outstanding		1,992,558		1,994,726
Incentive Stock Options
Share-based Compensation
Unrecognized compensation expense related to unvested options		$ 3.4
Unrecognized compensation expense, weighted-average period expected to be recognized		2 years 2 months 12 days
ESPP
Share-based Compensation
Increase in number of shares reserved for issuance (in shares)	203,742
Shares available for future issuance (in shares)		977,879
Number of shares issued (in shares)		0	0

Stock-Based Compensation - Restricted Stock Units (Details) - RSUs $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) $ / shares shares
Number of Restricted Stock Units
Balance, beginning of period \| shares	656,646
Granted \| shares	607,886
Vested \| shares	(157,436)
Balance, end of period \| shares	1,107,096
Weighted Average Exercise Price Per Share
Balance, beginning of period (price per share) \| $ / shares	$ 6.45
Granted (price per share) \| $ / shares	6.33
Vested (price per share) \| $ / shares	6.37
Balance, end of period (price per share) \| $ / shares	$ 6.39
2016 Employee Incentive Plan
Weighted Average Exercise Price Per Share
Unrecognized stock-based compensation expense \| $	$ 6.4
Unrecognized compensation expense, weighted-average period expected to be recognized	2 years 3 months 18 days

Significant Agreements (Details) - Joint Development Agreement - GlobalFoundries, Inc.	Oct. 17, 2014
Joint development agreement
Period of possession of exclusive right to manufacture after qualification of device	3 years
Period of possession of exclusive right to manufacture after completion of device development work	4 years

Net Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator:
Net income (loss)	$ 761	$ 1,935
Basic EPS
Weighted average shares of common stock outstanding, basic	20,450,994	19,896,654
Net income per common share, Basic	$ 0.04	$ 0.10
Diluted EPS
Net income (loss)	$ 761	$ 1,935
Less: warrant liability fair value loss (gain) recognized	23	(11)
Net income attributable to common stockholders, diluted	$ 784	$ 1,924
Weighted average shares of common stock outstanding, basic	20,450,994	19,896,654
Dilutive effect of stock options and RSUs	381,080	829,539
Weighted-average shares of common stock outstanding, diluted	20,832,074	20,726,193
Net income per common share, Diluted	$ 0.04	$ 0.09

Net Income Per Common Share - Potentially Dilutive Securities (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net Income Per Common Share
Potentially dilutive securities excluded from diluted net loss per common share	1.6	0.3