Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 117,069	$ 107,068
Short-term investments	113,384	241,821
Accounts receivable, net	27,273	40,130
Inventory, net	45,761	31,486
Prepaid expenses and other	15,221	7,115
Total current assets	318,708	427,620
Property and equipment, net	40,374	27,043
Operating lease right-of-use assets	18,586	19,226
Other assets	5,932	5,592
Total assets	383,600	479,481
Current liabilities:
Accounts payable	16,829	14,283
Accrued liabilities	4,898	6,765
Accrued compensation and other employee benefits	14,733	17,466
Customer deposits	1,071	1,278
Deferred revenue, current portion	8,026	7,474
Operating lease liabilities, current portion	5,382	4,889
Total current liabilities	50,939	52,155
Deferred revenue, net of current portion	3,757	3,527
Long-term debt, net	226,250	225,144
Operating lease liabilities, net of current portion	19,726	21,693
Total liabilities	300,672	302,519
Commitment and contingencies (Note 10)
Stockholders’ equity:
Preferred stock, $0.0001 par value, 15,000 shares authorized; none issued	0	0
Common stock, $0.0001 par value, 150,000 shares authorized; 46,635 and 45,729 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively	5	5
Additional paid-in capital	849,406	827,028
Accumulated other comprehensive loss	(1,301)	(318)
Accumulated deficit	(765,182)	(649,753)
Total stockholders’ equity	82,928	176,962
Total liabilities and stockholders’ equity	$ 383,600	$ 479,481