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 and nine months ended September 30, 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, net realizable value of inventory, 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): September 30, December 31, 2023 2022 Trade accounts receivable $ 10,170 $ 10,498 Unbilled accounts receivable 229 551 Allowance for product returns and price adjustments (311) (384) Accounts receivable, net $ 10,088 $ 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. 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, net Three Months Ended Nine Months Ended As of September 30, September 30, September 30, December 31, Customers 2023 2022 2023 2022 2023 2022 Customer A * 24 % * 22 % * 30 % Customer B 16 % 16 % 16 % 14 % 14 % 18 % Customer C 12 % * 13 % * * * Customer D * 10 % 11 % * * * Customer E 16 % * 16 % * 31 % * Customer F 11 % * * * 16 % * * 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 September 30, 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 included Level 1 assets and a Level 3 liability. Level 1 assets included highly liquid money market funds that are included in cash equivalents. The Company’s Level 3 liability consisted of warrants issued in connection with the Company’s 2019 Credit Facility. These warrants were extinguished as of September 30, 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): September 30, 2023 Level 1 Level 2 Level 3 Total Assets: Money market funds $ 34,939 $ — $ — $ 34,939 Total assets measured at fair value $ 34,939 $ — $ — $ 34,939 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 Government Tax Credits, Incentives and Grants From time to time, the Company may receive government funding in the form of tax credits, operating-related grants, capital-related grants, or other incentives to support various business activities, including capital development, research and development, and other activities as defined by the relevant government agency awarding the tax credit, incentive, or grant. The amount received is typically based on the amount of qualifying costs incurred. The Company typically has to meet certain requirements to retain the government funding. The Company records operating-related grants and non-income related tax credits as other income in the condensed statements of income and comprehensive income when there is reasonable assurance that the grant will be received, and the Company will comply with the conditions specified in the grant agreement. The Company received Employee Retention Tax Credit (“ERTC”) refunds from the United States Treasury totaling $2.0 million, relating to the payroll periods from October 1, 2020 through September 30, 2021. The amounts were received pursuant to provisions within the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”), the Taxpayer Certainty and Disaster Tax Relief Act of 2020 enacted as part of the Consolidated Appropriations Act, 2021 (“Relief Act”), the American Rescue Plan Act of 2021 (“ARPA”) which provide tax relief and other stimulus measures, including the ERTC. The ERTC program allows for employers to claim a refundable tax credit against a portion of the employer share of Social Security tax for qualified wages paid to employees from March 13, 2020 through September 30, 2021. The Company recognized the $2.0 million tax credit within other income (expense), net in the condensed statements of income and comprehensive income in the second quarter of 2023, which is when the amount was received and it was determined that those amounts were reasonably assured to be retained by the Company. The Company’s compliance with the program’s qualifications may be subject to audit through the year ended December 31, 2025, which is when the statute of limitation expires. The Company has received all expected ERTC refunds based on applications that have been submitted. 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 Codification Improvements Financial Instruments-Credit Losses (Topic 326) 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. |