Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

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Summary of Significant Accounting Policies (Details) - USD ($)
$ / shares in Units, $ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Warrants outstanding, term (in years) 5 years  
Deferred revenue $ 575 $ 0
Contract assets from lot sales and other contracts 2,400 0
Revenue, remaining performance obligation, amount $ 15,200 $ 0
Private Placement Warrants    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Exercise price of warrants (in dollars per share) $ 11.50