Document And Entity Information - USD ($)	7 Months Ended
	Dec. 31, 2020	Feb. 28, 2021	Jun. 30, 2020
Document Information Line Items
Entity Registrant Name	Northern Genesis Acquisition Corp.
Document Type	10-K/A
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		39,931,680
Entity Public Float			$ 0
Amendment Flag	true
Amendment Description	Northern Genesis Acquisition Corp. (the “Company,” “we”, “our” or “us”) is filing this Annual Report on Form 10-K/A (Amendment No. 1), or this Annual Report, to amend our Annual Report on Form 10-K for the period ended December 31, 2020, originally filed with the Securities and Exchange Commission, or the SEC, on March 9, 2021, or the Original Filing, to restate our consolidated financial statements for the period ended December 31, 2020. We are also restating the financial statements as of August 20, 2020 and as of and for the period ended September 30, 2020 in the accompanying financial statements included in this Annual Report, including describing the restatement and its impact on previously reported amounts.The restatement results from the Company’s prior accounting for its outstanding warrants issued in connection with its initial public offering in August 2020 as components of equity instead of as derivative liabilities. The warrant agreement governing the warrants includes a provision that provides for potential changes to the settlement amounts dependent upon the characteristics of the holder of the warrant. In addition, the warrant agreement includes a provision that in the event of a tender or exchange offer made to and accepted by holders of more than 50% of the outstanding shares of a single class of common stock, all holders of the warrants would be entitled to receive cash for their warrants (the “tender offer provision”). In other words, in the event of a qualifying cash tender offer (which could be outside the control of the Company), all warrant holders would be entitled to cash, while only certain of the holders of the underlying common stock would be entitled to cash.On April 12, 2021, the SEC released a Staff Statement on Accounting and Reporting Considerations for Warrants Issued by special purpose acquisition companies (“SPACs”) (the “SEC Staff Statement”). Specifically, the SEC Staff Statement focused on certain settlement terms and provisions related to certain tender offers following a business combination, which terms are similar to those contained in the warrant agreement governing our warrants. Following the SEC Staff Statement, the Company’s management further evaluated the warrants under Accounting Standards Codification (“ASC”) Subtopic 815-40, Contracts in Entity’s Own Equity.  ASC Section 815-40-15 addresses equity versus liability treatment and classification of equity-linked financial instruments, including warrants, and states that a warrant may be classified as a component of equity only if, among other things, the warrant is indexed to the issuer’s common stock.  Under ASC Section 815-40-15, a warrant is not indexed to the issuer’s common stock if the terms of the warrant require an adjustment to the exercise price upon a specified event and that event is not an input to the fair value of the warrant.  Based on management’s evaluation, the Company’s audit committee, in consultation with management and after discussion with the Company’s independent registered public accounting firm, concluded that the Company’s warrants are not indexed to the Company’s common shares in the manner contemplated by ASC Section 815-40-15 because the holder of the instrument is not an input into the pricing of a fixed-for-fixed option on equity shares. In addition, based on management’s evaluation, the Company’s audit committee, in consultation with management and after discussion with the Company’s independent registered public accounting firm, concluded the tender offer provision included in the warrant agreement fails the “classified in shareholders’ equity” criteria as contemplated by ASC Section 815-40-25.As a result of the above, the Company should have classified the warrants as derivative liabilities in its previously issued financial statements. Under this accounting treatment, the Company is required to measure the fair value of the warrants at the end of each reporting period and recognize changes in the fair value from the prior period in the Company’s operating results for the current period.The Company’s accounting for the warrants as components of equity instead of as derivative liabilities did not have any effect on the Company’s previously reported operating expenses, cash flows or cash.In connection with the restatement, the Company’s management reassessed the effectiveness of its disclosure controls and procedures for the periods affected by the restatement. As a result of that reassessment, the Company’s management determined that its disclosure controls and procedures for such periods were not effective with respect to the classification of the Company’s warrants as components of equity instead of as derivative liabilities.  For more information, see Item 9A included in this Annual Report on Form 10-K.The restatement is more fully described in Note 2 of the notes to the financial statements included herein. This Annual Report also amends and restates the Company’s Management’s Discussion and Analysis of Financial Condition and Results of Operations, Risk Factors and other disclosures made in the Original Filing as appropriate to reflect the restatement and revision of the relevant periods.In accordance with Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), the Company is also including with this Annual Report currently dated certifications of the Company’s Principal Executive Officer and Principal Financial Officer (attached as Exhibits 31.1, 31.2, 32.1, and 32.2).Except as discussed above and as further described in Note 2 to the consolidated financial statements, the Company has not modified or updated disclosures presented in this Annual Report. Accordingly, the Annual Report does not reflect events occurring after the Original Filing or modify or update those disclosures affected by subsequent events. Information not affected by the restatement and revision is unchanged and reflects disclosures made at the time of the filing of the Original Filing. Among other things, forward-looking statements made in the Original Filing have not been revised to reflect events, results or developments that occurred or facts that became known to us after the date of the Original Filing, other than the restatement, and such forward-looking statements should be read in conjunction with our filings with the SEC, including those subsequent to the Original Filing.The Company has not amended its previously filed Current Report on Form 8-K or Quarterly Reports on Form 10-Q for the period affected by the restatement.  The financial information that has been previously filed or otherwise reported for these periods is superseded by the information in this Annual Report on Form 10-K, and the financial statements and related financial information contained in such previously filed reports should no longer be relied upon.
Entity Central Index Key	0001815495
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	true
Entity Ex Transition Period	false
Entity File Number	001-39451
Entity Incorporation, State or Country Code	DE
Document Transition Report	false
Entity Interactive Data Current	Yes