SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	9 Months Ended
Sep. 30, 2021
BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Reclassifications and Immaterial Correction of Error	Reclassifications The Company reclassified $2.3 million of gain on sale of fixed assets to other income during the nine months ended September 30, 2020 in order to consistently present its condensed consolidated financial statements. The reclassification did not impact net loss. Immaterial Correction of Error The Company’s previously issued financial statements have been revised to reclassify certain expenses that were inappropriately presented within the consolidated statement of operations. This resulted in the reclassification of $2.7 million of research and development expenses to selling and administrative expenses for the nine months ended September 30, 2020. The error did not impact net loss. The Company, in consultation with the Audit Committee of the Board of Directors, evaluated the effect of these adjustments on the Company’s consolidated financial statements under ASC 250, Accounting Changes and Error Corrections and Staff Accounting Bulletin No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements and determined it was not necessary to recall its consolidated condensed financial statements as the errors did not materially misstate those consolidated financial statements. The Company looked at both quantitative and qualitative characteristics of the required corrections.
Cash and cash equivalents	Cash and cash equivalents Cash includes cash equivalents which are highly liquid investments that are readily convertible to cash. The Company considers all liquid investments with original maturities of three months or less to be cash equivalents. The Company presents cash and cash equivalents within Cash and cash equivalents on the Balance Sheet. The Company maintains its cash in investment accounts as well as bank deposit accounts which, at times, exceed federally insured limits. Management believes it is not exposed to significant credit risk.
Property, plant and equipment	Property, plant and equipment Property and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets. Determination of useful lives and depreciation will begin once the assets are ready for their intended use. Upon retirement or sale, the cost and related accumulated depreciation are removed from the balance sheet and the resulting gain or loss is reflected in the statement of operations. Maintenance and repair expenditures are expensed as incurred, while major improvements that increase functionality of the asset are capitalized and depreciated ratably to expense over the identified useful life. Further, interest on any debt financing arrangement is capitalized to the purchased property, plant, and equipment if the requirements for capitalization are met. Long-lived assets, such as property, plant, and equipment are reviewed for potential impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset or asset group to estimated undiscounted future cash flows expected to be generated by the asset or asset group. If the carrying amount of an asset or asset group exceeds its estimated undiscounted future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset or asset group exceeds the fair value of the asset or asset group.
Research and development costs	Research and development costs The Company expenses research and development costs as they are incurred. Research and development costs consist primarily of personnel costs for engineering and research, prototyping costs, and contract and professional services.
Stock-based compensation	Stock-based compensation The Company has adopted ASC Topic 718, Accounting for Stock-Based Compensation (ASC 718), which establishes a fair value-based method of accounting for stock-based compensation plans. In accordance with ASC 718, the cost of stock-based awards issued to employees and non-employees over the awards' vest period is measured on the grant date based on the fair value. The fair value is determined using the Black-Scholes option pricing model, which incorporates assumptions regarding the expected volatility, expected option life and risk-free interest rate. The resulting amount is charged to expense on the straight-line basis over the period in which the Company expects to receive the benefit, which is generally the vesting period. Further, pursuant to ASU 2016-09 – Compensation – Stock Compensation (Topic 718), the Company has elected to account for forfeitures as they occur.
Warrants	Warrants The Company accounts for its Public and Private Warrants as described in Note 3 in accordance with the guidance contained in ASC Topic 815-40-15-7D and 7F under which the Public Warrants and Private Warrants do not meet the criteria for equity treatment and must be recorded as liabilities. Accordingly, the Company classifies the Public and Private Warrants as liabilities at their fair value and adjusts the Public and Private Warrants to fair value at each reporting period or at the time of settlement. Any change in fair value is recognized in the statement of operations as Other income/(expense).
Income taxes	Income taxes Income taxes are recorded in accordance with ASC Topic 740, Income Taxes (ASC 740). Deferred tax assets and liabilities are determined based on the difference between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. Valuation allowances are provided, if based upon the weight of available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. The Company has recorded a full valuation allowance against its deferred tax assets. The Company accounts for uncertain tax positions in accordance with the provisions of ASC Topic 740. When uncertain tax positions exist, the Company recognizes the tax benefit of tax positions to the extent that the benefit would more likely than not be realized assuming examination by the taxing authority. The determination as to whether the tax benefit will more likely than not be realized is based upon the technical merits of the tax position as well as consideration of the available facts and circumstances. The Company recognizes any interest and penalties accrued related to unrecognized tax benefits as income tax expense. The Company does not have material uncertain tax positions.
Recent accounting pronouncements	Recent accounting pronouncements In February 2016, the FASB issued ASU 2016-02, Leases, and has subsequently issued several supplemental and/or clarifying ASUs (collectively ASC 842) to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. ASC 842 is effective for the Company beginning after December 2021 and interim periods within fiscal years beginning after December 15, 2022, with early adoption permitted. The Company is currently evaluating the effect of the adoption of this guidance on the consolidated financial statements.

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