Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Current assets:
Cash and cash equivalents	$ 88,169	$ 27,344
Short-term investments	235,097	72,864
Inventory	4,523	3,543
Prepaid expenses and other current assets	12,407	5,404
Deferred transaction costs	0	3,929
Total current assets	340,196	113,084
Restricted cash, noncurrent	856	1,006
Other long-term assets	4,848	4,607
Total assets	345,900	118,697
Current liabilities:
Accounts payable	13,233	8,066
Accrued liabilities	5,823	4,984
Deferred revenue	624	1,272
Warrant liabilities		906	$ 0
Total current liabilities	19,680	15,228
Warrant liabilities	33,370	0
Deferred rent, noncurrent	384	381
Total liabilities	53,434	15,609
Commitments and contingencies (Note 11)
Mezzanine equity:
Total mezzanine equity	0	249,962
Stockholders' equity (deficit):
Common stock – Class A shares, par value $0.0001, 2,750,000,000 and 166,696,759 shares authorized and 182,973,780 and 46,025,754 shares issued and outstanding as of March 31, 2021 and December 31, 2020, respectively; Class V shares, par value $0.0001, 10,000,000 shares authorized and 8,377,623 shares issued, and outstanding as of March 31, 2021; Class F shares, par value $0.0001, 6,941,352 shares authorized, issued, and outstanding as of December 31, 2020	18	0
Additional paid-in capital	515,216	24,429
Accumulated other comprehensive loss	(72)	(11)
Accumulated deficit	(222,696)	(171,292)
Total stockholders' equity (deficit)	292,466	(146,874)	$ (139,953)
Total liabilities, mezzanine equity, and stockholders' equity (deficit)	$ 345,900	$ 118,697