Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 134,689	$ 208,944
Restricted cash	725	775
Marketable securities	445,755	276,710
Accounts receivable	2,444	5,971
Inventories, net	4,318	3,613
Prepaid expenses and other current assets	13,660	4,797
Total current assets	601,591	500,810
Property and equipment, net	9,258
Property and equipment, net		7,689
Operating lease right-of-use assets	11,976
Goodwill	701	701
Other non-current assets	2,641	1,151
Total assets	626,167	510,351
Current liabilities:
Accounts payable	6,996	6,039
Accrued and other current liabilities	12,904	10,452
Operating lease liabilities	4,275
Debt, current	64	99
Total current liabilities	24,239	16,590
Warrant liabilities	44,825	343,400
Debt, non-current	194	302
Operating lease liabilities, non-current	8,760
Other non-current liabilities	1,133	1,318
Total liabilities	79,151	361,610
Stockholders’ equity:
Additional paid-in capital	1,244,228	733,175
Accumulated other comprehensive income	7	34
Accumulated deficit	(697,254)	(584,501)
Total stockholders’ equity	547,016	148,741
Total liabilities and stockholders’ equity	626,167	510,351
Class A Common Stock
Stockholders’ equity:
Common stock	24	22
Class B Common Stock
Stockholders’ equity:
Common stock	$ 11	$ 11