CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 87,172	$ 89,128
Short-term investments	61,767	78,530
Accounts receivable, net	18,103	16,642
Inventory and other deferred costs	8,219	8,591
Prepaid expenses and other current assets	7,511	6,808
Total current assets	182,772	199,699
Property and equipment, net	61,446	61,935
Operating lease right-of-use assets	23,971	26,480
Other long-term assets	3,991	4,586
Total assets	272,180	292,700
Current liabilities
Accounts payable	10,927	12,854
Accrued and other current liabilities	20,653	19,013
Contract liabilities	2,563	1,264
Total current liabilities	34,143	33,131
Long-term operating lease liabilities	40,309	41,041
Other long-term liabilities	4,096	389
Total liabilities	78,548	74,561
Commitments and Contingencies (Note 9)
Stockholders’ equity
Common stock, $0.0001 par value - 200,000,000 shares authorized; 46,774,490 and 46,707,084 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	5	5
Additional paid-in capital	583,151	579,456
Accumulated other comprehensive loss	(455)	(912)
Accumulated deficit	(389,069)	(360,410)
Total stockholders’ equity	193,632	218,139
Total liabilities and stockholders’ equity	$ 272,180	$ 292,700