Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 129,323	$ 208,944
Restricted cash	725	775
Marketable securities	415,544	276,710
Accounts receivable	1,033	5,971
Inventories, net	7,871	3,613
Prepaid expenses and other current assets	23,883	4,797
Total current assets	578,379	500,810
Property and equipment, net	11,128	7,689
Operating lease right-of-use assets	10,165
Intangible assets, net	2,488	0
Goodwill	3,110	701
Other non-current assets	2,536	1,151
Total assets	607,806	510,351
Current liabilities:
Accounts payable	9,682	6,039
Accrued and other current liabilities	18,551	10,452
Operating lease liabilities	4,927
Debt, current	66	99
Total current liabilities	33,226	16,590
Warrant liabilities	27,753	343,400
Debt, non-current	177	302
Operating lease liabilities, non-current	6,639
Other non-current liabilities	911	1,318
Total liabilities	68,706	361,610
Commitments and contingencies (Note 13)
Stockholders’ equity:
Additional paid-in capital	1,287,558	733,175
Accumulated other comprehensive income	100	34
Accumulated deficit	(748,594)	(584,501)
Total stockholders’ equity	539,100	148,741
Total liabilities and stockholders’ equity	607,806	510,351
Class A Common Stock
Stockholders’ equity:
Common stock	26	22
Class B Common Stock
Stockholders’ equity:
Common stock	$ 10	$ 11