Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses and Other Current Liabilities (Details)

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Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Accrued Liabilities, Current [Abstract]    
Accrued property and equipment purchases $ 9,859 $ 34,375
Accrued research and development costs 18,716 23,994
Accrued professional fees 13,747 9,239
Accrued battery supplier costs 0 10,000
Other accrued expenses 9,650 6,317
Total accrued expenses $ 51,972 $ 83,925