Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 206,730	$ 208,944
Restricted cash	725	775
Marketable securities	403,591	276,710
Accounts receivable	2,143	5,971
Inventories, net	3,283	3,613
Prepaid expenses and other current assets	10,371	4,797
Total current assets	626,843	500,810
Property and equipment, net	8,366
Property and equipment, net		7,689
Operating lease right-of-use assets	12,835
Goodwill	701	701
Other non-current assets	2,469	1,151
Total assets	651,214	510,351
Current liabilities:
Accounts payable	7,845	6,039
Accrued and other current liabilities	8,919	10,452
Operating lease liabilities	4,312
Debt, current	104	99
Total current liabilities	21,180	16,590
Warrant liabilities	51,753	343,400
Debt, non-current	223	302
Operating lease liabilities, non-current	9,662
Other non-current liabilities	1,236	1,318
Total liabilities	84,054	361,610
Stockholders’ equity:
Additional paid-in capital	1,227,559	733,175
Accumulated other comprehensive income (loss)	(9)	34
Accumulated deficit	(660,424)	(584,501)
Total stockholders’ equity	567,160	148,741
Total liabilities and stockholders’ equity	651,214	510,351
Class A Common Stock
Stockholders’ equity:
Common stock	23	22
Class B Common Stock
Stockholders’ equity:
Common stock	$ 11	$ 11