Condensed Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 37,277	$ 85,836
Restricted cash	1,710	1,710
Accounts receivable, net	5,355	9,977
Prepaid expenses and other current assets	3,251	4,159
Total current assets	47,593	101,682
Property and equipment, net	16,372	15,945
Operating lease right-of-use assets	40,144
Intangible assets, net	842	867
Other assets	6,660	6,631
Total Assets	111,611	125,125
Current liabilities:
Accounts payable	5,961	6,102
Accrued expenses and other current liabilities	16,420	20,110
Operating lease liabilities, current	14,467
Total current liabilities	36,848	26,212
Operating lease liabilities, non-current	29,193
Derivative warrant liabilities	3,915	6,577
Total liabilities	69,956	32,789
Commitments and Contingencies
Shareholders' Equity
Common Stock	12	12
Additional paid-in capital	738,908	734,142
Accumulated other comprehensive income	522	724
Accumulated deficit	(697,787)	(642,542)
Total shareholders' equity	41,655	92,336
Total liabilities and stockholders equity	$ 111,611	$ 125,125