Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 164,674	$ 178,096
Trade accounts receivable	17,721	25,942
Inventory	15,665	14,547
Prepaid expenses and other current assets	10,304	11,985
Total current assets	208,364	230,570
Restricted cash	270	270
Property and equipment, net	29,913	27,992
Operating lease right-of-use assets	25,325	26,060
Other assets	1,985	2,361
Total assets	265,857	287,253
Current liabilities:
Trade accounts payable	8,015	8,198
Accrued expenses and other current liabilities	9,916	12,425
Deferred revenue	9,780	12,128
Total current liabilities	27,711	32,751
Notes payable	19,778	19,762
Deferred revenue, net of current portion	1,600	2,187
Lease liability, long-term	23,567	24,337
Total liabilities	72,656	79,037
Commitments and contingencies (Note 13)
Stockholders’ equity:
Common stock, $0.00005 par value. Authorized 300,000,000 shares at March 31, 2022 and December 31, 2021; issued and outstanding 67,820,115 and 67,595,535 shares at March 31, 2022 and December 31, 2021, respectively	4	4
Additional paid-in capital	478,231	471,820
Accumulated deficit	(285,034)	(263,608)
Total stockholders’ equity	193,201	208,216
Total liabilities and stockholders’ equity	$ 265,857	$ 287,253