Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 438,052	$ 439,488
Investments	209,757	218,218
Accounts receivable, net	21,906	17,074
Inventory	14,236	11,213
Deferred costs of services	0	462
Prepaid expenses and other current assets	5,623	5,097
Total current assets	689,574	691,552
Non-current inventory	2,822	4,085
Property and equipment, net of accumulated depreciation of $15,773 and $15,244 as of March 31, 2022 and December 31, 2021, respectively	11,873	9,557
Other long-term assets	8,906	908
Total assets	713,175	706,102
Current liabilities
Accounts payable	18,158	15,089
Accrued liabilities	6,042	11,109
Deferred revenue	2,468	3,021
Other current liabilities	985	66
Total current liabilities	27,653	29,285
Warrant liabilities	22,541	35,181
Earn-out liability	10,423	26,885
Deferred revenue, net of current portion	32,102	2,364
Other long-term liabilities	3,147	363
Total liabilities	95,866	94,078
Commitments and contingencies
Stockholders’ equity
Preferred stock, $0.0001 par value; 1,000,000 shares authorized; no shares issued and outstanding at March 31, 2022 and December 31, 2021	0	0
Common stock, $0.0001 par value; 600,000,000 shares authorized; 182,176,926 and 181,552,241 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	18	18
Additional paid-in capital	1,120,910	1,110,991
Accumulated other comprehensive loss	(727)	(72)
Accumulated deficit	(502,892)	(498,913)
Total stockholders’ equity	617,309	612,024
Total liabilities and stockholders’ equity	$ 713,175	$ 706,102