Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 159,416	$ 329,977
Restricted cash	710	725
Marketable securities (including $12,250 and $12,200 with a related party as of March 31, 2022 and December 31, 2021, respectively, see Note 15)	547,440	462,141
Accounts receivable	3,256	13,013
Inventory	10,012	10,342
Prepaid expenses and other current assets	37,545	29,195
Total current assets	758,379	845,393
Property and equipment, net	16,437	11,009
Operating lease right-of-use assets	14,005	9,145
Intangible assets, net	2,361	2,424
Goodwill	2,945	3,110
Other non-current assets	13,673	12,455
Total assets	807,800	883,536
Current liabilities:
Accounts payable	17,293	14,419
Accrued and other current liabilities	24,848	19,844
Operating lease liabilities	5,079	4,735
Total current liabilities	47,220	38,998
Warrant liabilities	16,399	31,230
Convertible senior notes	609,766	608,957
Operating lease liabilities, non-current	10,102	5,768
Other non-current liabilities	429	598
Total liabilities	683,916	685,551
Commitments and contingencies (Note 13)
Stockholders’ equity:
Additional paid-in capital	1,314,742	1,257,214
Accumulated other comprehensive loss	(4,556)	(908)
Treasury stock	(275,519)	(235,871)
Accumulated deficit	(910,820)	(822,487)
Total stockholders’ equity	123,884	197,985
Total liabilities and stockholders’ equity	807,800	883,536
Class A Common Stock
Stockholders’ equity:
Common stock	27	27
Class B Common Stock
Stockholders’ equity:
Common stock	$ 10	$ 10