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Summary of Significant Accounting Policies (Policies) | 12 Months Ended
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Dec. 31, 2023
Accounting Policies [Abstract] |
Reclassifications | Reclassifications Certain prior year amounts have been reclassified to conform with the current year’s presentation. These reclassifications have no impact on the previously reported results.
Cash and Cash Equivalents | Cash and Cash Equivalents Cash and cash equivalents consist of cash on hand, money market funds and highly liquid investments with an original maturity date of 90 days or less from the date of purchase. The fair value of cash equivalents approximated their carrying value as of December 31, 2023 and December 31, 2022. The Company has its cash and cash equivalents with a large creditworthy financial institution and the balance exceeded federally insured limits. The Company has not experienced any losses in such accounts, and management believes the Company is not exposed to any significant credit risk on cash and cash equivalents.
Marketable Investment Securities | Marketable Investment Securities The Company’s marketable investment securities are comprised of investments in certificates of deposit and U.S. Treasury bills and notes. The Company designates investments in debt securities as available-for-sale. Available-for-sale debt securities with original maturities of three months or less from the date of purchase are classified within cash and cash equivalents. Available-for-sale debt securities with original maturities longer than three months are available to fund current operations and are classified as marketable investment securities, within current assets on the consolidated balance sheets. The Company may sell these securities at any time for use in its current operations or for other purposes, even prior to maturity. Available-for-sale debt securities are reported at fair value with the related unrealized gains and losses included in accumulated other comprehensive income (loss), a component of stockholders’ equity, net of tax. Realized gains and losses on the sale of marketable securities are determined using the average cost method on a first-in, first-out basis and recorded in total other income (expense), net in the consolidated statements of operations and comprehensive loss. The available-for-sale debt securities are subject to a periodic impairment review. For investments in an unrealized loss position, the Company writes down the amortized cost basis of the investment if it is more likely than not that the Company will be required or will intend to sell the investment before recovery of its amortized cost basis. For investments not likely to be sold before recovery of the amortized cost basis, the Company determines whether a credit loss exists by considering information about the collectability of the instrument, current market conditions, and reasonable and supportable forecasts of economic conditions. The Company recognizes an allowance for credit losses up to the amount of the unrealized loss when appropriate. Allowances for credit losses and write-downs are recognized in total other income (expense), net, and unrealized losses not related to credit losses are recognized in accumulated other comprehensive income (loss). There are no allowances for credit losses recorded for the periods presented.
Accounts Receivable | Accounts Receivable Trade accounts receivable are recorded at the invoiced amount (net of allowance) and do not bear interest. The Company maintains an allowance for doubtful accounts for amounts the Company does not expect to collect. In establishing the required allowance, management considers historical losses, current market condition, customers’ financial condition, the age of receivables, and current payment patterns. Account balances are written off against the allowance once the receivable is deemed uncollectible. Recoveries of trade receivables previously written off are recorded when collected. At December 31, 2023 total accounts receivable was $504,264 with an allowance for uncollectable accounts of $200,338 resulting in a net amount of $303,926. At December 31, 2022 total accounts receivable was $6,552,249 with an allowance for uncollectable accounts of $3,098,526 resulting in a net amount of $3,453,723.
Equity-Method Investments | Equity-Method Investments Our equity method investments are initially recorded at cost and are included in other long-term assets in the accompanying consolidated balance sheet. We adjust the carrying value of our investment based on our share of the earnings or losses in the periods which they are reported by the investee until the carrying amount is zero. The earnings or losses are included in other income (expense) in the accompanying consolidated statements of operations.
Inventory | Inventory Inventory is stated at the lower of cost or net-realizable value. Inventory cost is determined on a first-in first-out basis that approximates average cost in accordance with ASC 330-10-30-12. At December 31, 2023, the Company had $1,664,725 in inventory, of which $700,467 was finished goods and $964,258 was raw materials. At December 31, 2022, the Company had $5,310,473 in inventory, of which $1,327,264 was finished goods and $3,983,209 was raw materials. The Company establishes reserves to reduce low-moving, obsolete, or unusable inventories to their estimated useful or scrap values. The Company recognized $2,760,011 and $0 related to the change in inventory reserves during the years ended December 31, 2023 and 2022, respectively.
Goodwill and Intangible Assets | Goodwill and Intangible Assets Goodwill represents the excess of the purchase price and related costs over the value assigned to net tangible and identifiable intangible assets acquired in business combinations. Goodwill and indefinite-lived intangible assets are not amortized, but rather tested for impairment at least annually on December 31, or more often if and when circumstances indicate that the carrying value may not be recoverable. Finite-lived intangible assets are amortized over their useful lives. During the years ended December 31, 2023 and 2022, the Company recognized impairment charges related to goodwill of $0 and $15,388,546, respectively.
Long-lived Assets | Long-lived Assets Long-lived assets, such as property and equipment, are stated at cost less accumulated depreciation and amortization. Depreciation is provided using the straight-line method over the estimated useful lives of the property, generally from three to five years. Repairs and maintenance costs are expensed as incurred except when such repairs significantly add to the useful life or productive capacity of the asset, in which case the repairs are capitalized. For in-process research and development projects acquired in business combinations, the in-process research and development project is capitalized and evaluated for impairment until the development process has been completed. Once the development process has been completed the asset will be amortized over its remaining estimated useful life. The Company reviews its long-lived assets, including property and equipment, indefinite-lived and finite-lived intangible assets, and ROU assets, for impairment whenever an event or change in facts and circumstances indicates that their carrying amounts may not be recoverable. Recoverability of these assets is measured by comparing the carrying amount to the estimated undiscounted future cash flows expected to be generated. If the carrying amount exceeds the undiscounted cash flows, the assets are determined to be impaired and an impairment charge is recognized as the amount by which the carrying amount exceeds fair value.
Revenue Recognition | Revenue Recognition The Company generates revenue from product sales and license sales. The Company recognizes revenue when all of the following criteria are satisfied: (i) identification of the promised goods or services in the contract; (ii) determination of whether the promised goods or services are performance obligations, including whether they are distinct in the context of the contract; (iii) measurement of the transaction price, including the constraint on variable consideration; (iv) allocation of the transaction price to the performance obligations; and (v) recognition of revenue when, or as the Company satisfies each performance obligation. Based on the criteria above, the Company typically recognizes revenue upon delivery. The Company constrains revenue by giving consideration to factors that could otherwise lead to a probable reversal of revenue. The Company records any payments received from customers prior to the Company fulfilling its performance obligation(s) as deferred revenue.
Grant Revenue | Grant Revenue The Company may submit applications to receive grant funding from governmental and non-governmental entities. The Company accounts for grants by analogizing to the contribution accounting model under ASC 958-605, Not-for-Profit Entities (“ASC 958”). Revenues from grants, contracts, and awards provided by governmental and non-governmental agencies are recorded based upon the terms of the specific agreements. The Company recognizes grant funding without conditions or continuing performance obligations as revenue in the consolidated statements of operations and comprehensive income (loss). The Company recognizes grant funding with conditions or continuing performance obligations as deferred revenue in the consolidated balance sheets if the conditions or performance obligations have not yet been met. The Company recognized grant funding revenue of $5.8 million during the year ended December 31, 2023. At December 31, 2023, the Company has also recorded $0.3 million of deferred revenue related to grant funding for which the cash was received, but the underlying conditions or performance obligations have not yet been met. Cash received from federal grants, contracts, and awards can be subject to audit by the grantor and, if the examination results in a disallowance of any expenditure, repayment could be required.
Deferred Revenue | Deferred Revenue Deferred revenue primarily consists of payments received from customers prior to the Company fulfilling its performance obligation of providing the product. When this occurs, the Company records a contract liability as deferred revenue. Deferred revenue is recognized as revenue as the related performance obligations are satisfied.
Research and Development | Research and Development Research and development costs are expensed when incurred. The Company recorded $22,962,593 and $17,438,098 of research and development costs for the years ended December 31, 2023 and 2022, respectively.
Stock-based Compensation | Stock-based Compensation The Company has granted stock-based awards, including restricted stock, stock options, stock warrants and restricted stock units (“RSUs”), to its employees, certain consultants and members of its board of directors. The Company records stock-based compensation based on the grant date fair value of the awards and recognizes the fair value of those awards as expense using the straight-line method over the requisite service period of the award. The Company estimates the grant date fair value of stock options using the Black-Scholes option-pricing model. When an award is forfeited prior to the vesting date, the Company recognizes an adjustment for the previously recognized expense in the period of the forfeiture.
Income Taxes | Income Taxes The Company accounts for income taxes in accordance with the liability method of accounting for income taxes. Under this method, d eferred income tax assets and deferred income tax liabilities represent the tax effect of temporary differences between financial reporting and tax reporting measured at enacted tax rates in effect for the year in which the differences are expected to reverse. The Company recognizes only the impact of tax positions that, based on their technical merits, are more likely than not to be sustained upon an audit by the taxing authority. Valuation allowances are provided when it is more-likely-than-not that some or all of the deferred income tax assets may not be realized. In assessing the need for a valuation allowance, the Company has considered its historical levels of income, expectations of future taxable income and ongoing tax planning strategies. Developing the provision for income taxes, including the effective tax rate and analysis of potential tax exposure items, if any, requires significant judgment and expertise in federal and state income tax laws, regulations and strategies, including the determination of deferred income tax assets and liabilities and any estimated valuation allowances deemed necessary to value deferred income tax assets. Judgments and tax strategies are subject to audit by various taxing authorities. The Company has uncertain income tax positions in the consolidated financial statements, and adverse determinations by these taxing authorities could have a material adverse effect on the consolidated financial positions, result of operations, or cash flows.
Net Income (Loss) per Share | Net Income (Loss) per Share Basic net income or loss per common share is computed by dividing net income or loss applicable to common shareholders by the weighted average number of shares outstanding during each period. Diluted net income or loss per share is computed by dividing net income or loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period increased by common shares that could be issued upon conversion or exercise of other outstanding securities to the extent those additional common shares would be dilutive. The dilutive effect of potentially dilutive securities is reflected in diluted net income or loss per share by application of the treasury stock method. During periods when the Company is in a net loss position, basic net loss per share is the same as diluted net loss per share as the effects of potentially dilutive securities are anti-dilutive.
Comprehensive Income (Loss) | Comprehensive Income (Loss) Comprehensive loss is comprised of net loss and unrealized gains and losses on marketable securities, net of income taxes.
Concentrations Risk and Significant Customers | Concentrations Risk and Significant Customers The Company had certain customers which were each responsible for generating 10% or more of the total revenue for the years ended December 31, 2023 and 2022, respectively. Two customers accounted for approximately 28% of product revenue for the year ended December 31, 2023 and one customer accounted for approximately 37% of product revenue for the year ended December 31, 2022. One granting agency accounted for 100% of grant revenue for the year ended December 31, 2023. Three customers accounted for more than 10% of accounts receivable at December 31, 2023 and 2022, respectively. These customers together accounted for approximately 97% and 61% of accounts receivable at December 31, 2023 and 2022, respectively.
Recently Issued Accounting Standards | Recently Issued Accounting Standards From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (“FASB”) that are adopted by the Company as of the specified effective date. If not discussed, management believes that the impact of recently issued standards, which are not yet effective, will not have a material impact on the Company’s financial statements upon adoption. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which requires an entity to disclose annually additional information related to the company’s income tax rate reconciliation and income taxes paid during the period. The guidance should be applied prospectively with the option to apply the standard retrospectively. The standard becomes effective for the Company for full year 2025 reporting. The Company is currently evaluating the impact of this new standard on its consolidated financial statements.

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