Business and Basis of Presentation	9 Months Ended
Business and Basis of Presentation	Sep. 30, 2024
Accounting Policies [Abstract]
Business and Basis of Presentation	Business and Basis of Presentation Our Business-An Overview NeuroMetrix, Inc. (the "Company" or "NeuroMetrix") develops and commercializes health care products that utilize non-invasive neurostimulation. Revenues are derived from the sale of medical devices and after-market consumable products and accessories. The Company’s products are sold in the United States and select overseas markets. They are cleared by the U.S. Food and Drug Administration ("FDA") and regulators in foreign jurisdictions where appropriate. The Company has two primary products. DPNCheck® is a point-of-care test for diabetic peripheral neuropathy, which is the most common long-term complication of Type 2 diabetes. Quell is an app-enabled, wearable device for lower extremity chronic pain and for the symptoms of fibromyalgia. The Company held cash, cash equivalents and investment grade securities totaling $14.8 million as of September 30, 2024. The Company believes that its present balance of cash resources and securities coupled with cash inflows from product sales will enable the Company to fund its operations for at least the next twelve months from the date of issuance of the financial statements. Actual cash requirements could differ from management's projections for many reasons, including changes the Company may make to its business strategy, commercial challenges, regulatory developments, changes to research and development programs, supply chain issues, staffing challenges and other items affecting the Company's projected uses of cash. During February 2024, the Company announced that it would undertake a review of its strategic options to maximize shareholder value. These options include changes in marketing strategies, the acquisition of new assets, potential sale of Company assets, and a merger or other strategic transaction. This review process remains ongoing. A timetable for completion of this process has not been established, and even if certain strategic alternatives may be available, the Company cannot provide any assurance that the strategic alternatives review process will result in the successful realization of any particular alternative, transaction or value. Accordingly, the unaudited financial statements have been prepared on a basis that assumes the Company will continue as a going concern and which contemplates the realization of assets and satisfaction of liabilities and commitments in the ordinary course of business. Unaudited Interim Financial Statements The accompanying unaudited balance sheet as of September 30, 2024, unaudited statements of operations, statements of comprehensive loss, changes in stockholders' equity and cash flows for the quarters ended September 30, 2024 and 2023 have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information and with the instructions to Form 10-Q and Article 8 of Regulation S-X. The accompanying balance sheet as of December 31, 2023 has been derived from the audited balance sheet as of December 31, 2023 included in the Company's Form 10-K referenced below and does not include all disclosures required by U.S. GAAP. In the opinion of management, the financial statements include all normal and recurring adjustments considered necessary for a fair presentation of the Company’s financial position and operating results. Operating results for the nine months ended September 30, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024 or any other period. These financial statements and notes should be read in conjunction with the financial statements for the year ended December 31, 2023 included in the Company’s Annual Report on Form 10-K, as filed with the Securities and Exchange Commission (the "SEC"), on March 1, 2024 (File No. 001-33351). Prior period reclassification Certain items in the Statements of Cash Flows from the prior year were reclassified to conform with the current presentation. Revenues Revenues include product sales, net of estimated returns. Revenue is measured as the amount of consideration the Company expects to receive in exchange for product transferred. Revenue is recognized at the point in time when contractual performance obligations have been satisfied and control of the product has been transferred to the customer. The Company has a single product delivery performance obligation. Accrued product returns using the most likely amount method are estimated based on historical data and evaluation of current information and variable consideration is not constrained. Revenue from product sales that occur via an online pharmacy agent are recognized on a gross basis and the related fulfillment fees are expensed within cost of revenues. Accounts receivable are recorded in the amount the Company expects to collect, net of the allowance for credit losses. The allowance for credit losses is the Company’s best estimate of the amount of probable credit losses based on customer past payment history, product usage activity, and recent communications with the customer. Individual customer balances which are over 90 days past due are reviewed individually for collectability and written-off when recovery is not probable. The Company does not have any off-balance sheet credit exposure related to its customers. Allowance for credit losses was $25,000 as of September 30, 2024 and December 31, 2023. Two customers accounted for 28% of total revenues in the quarter ended September 30, 2024 and two different customers accounted for 28% of total revenues in the quarter ended September 30, 2023. One customer accounted for 10% of total revenues for the nine months ended September 30, 2024 and two customers accounted for 26% of total revenues in the nine months ended September 30, 2023. Four customers accounted for 74% and three customers accounted for 74% of accounts receivable as of September 30, 2024 and December 31, 2023, respectively. Cash and Cash Equivalents Cash and cash equivalents include bank demand deposits and money market funds that invest primarily in U.S. government securities. Securities The Company invests in highly liquid, marketable debt securities with high credit ratings and typically with maturities of two years or less. Individual securities are designated by the Company as either "held-to-maturity" ("HTM") or “available-for-sale” ("AFS") at the point of investment. Securities classified as short-term have maturities of less than one year. As of September 30, 2024, all marketable securities held by the Company are classified as AFS and had remaining contractual maturities of one year or less. HTM securities are valued on an amortized cost basis and reviewed to determine if an allowance for credit losses should be recorded in the statements of operations. AFS securities are valued at fair value. Unrealized gains and losses on AFS securities are included as a component of accumulated other comprehensive income in the balance sheets and statements of stockholders’ equity and a component of total comprehensive loss in the statements of comprehensive loss. An AFS security may be impaired if its fair value is less than amortized cost. Unrealized losses are evaluated to determine if the impairment is credit-related or non-credit-related. Credit-related impairment is recognized as an allowance on the balance sheet with a corresponding adjustment to earnings, and a non-credit-related impairment is recognized in other comprehensive loss. For certain types of securities, such as U.S. Treasuries, the Company generally expects zero credit losses. No allowance for credit losses was recorded on its securities portfolio as of September 30, 2024 or December 31, 2023. Fair Value The Company follows the provisions of Financial Accounting Standards Board (the "FASB") Accounting Standards Codification ("ASC") Topic 820-10, Fair Value Measurements and Disclosures ("ASC 820-10"), which defines fair value, establishes a framework for measuring fair value in GAAP and requires certain disclosures about fair value measurements. 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. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, ASC 820-10 established a three-tier fair value hierarchy which prioritizes the inputs used in measuring fair value as follows: Level 1 observable inputs such as quoted prices in active markets; Level 2 inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and Level 3 unobservable inputs for which there are little or no market data, which require the Company to develop its own assumptions. The hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value (See Note 5). Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make significant estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during reporting periods. Actual results could differ from those estimates. Recent Accounting Pronouncements Accounting Standards Updates ("ASUs") issued by the FASB are evaluated for their applicability. ASUs not included in the disclosures in this report were assessed and determined to be either not applicable or not expected to have a material impact on our financial statements. In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which requires enhanced disclosures on both an annual and interim basis about significant segment expenses, including for companies with only one reportable segment. This ASU is effective on a retrospective basis for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company is currently evaluating the impact of the adoption of this standard on the Company’s Financial Statements and disclosures. In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures, which requires public entities, on an annual basis, to provide disclosures of specific categories in the rate reconciliation, additional information for reconciling items that meet a quantitative threshold and income taxes paid disaggregated by jurisdiction. ASU 2023-09 is effective for annual periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of this standard on the Company’s Financial Statements and disclosures.