CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 39,310	$ 123,903
Short-term investments	142,541	69,443
Accounts receivable, net	40,667	35,449
Inventory	31,925	21,958
Prepaid expenses and other current assets	5,507	5,049
Total current assets	259,950	255,802
Long-term investments	19,200	14,225
Property and equipment, net	31,121	27,500
Operating lease right-of-use assets	11,414	11,667
Other non-current assets	2,223	2,462
Goodwill	3,881	3,881
Total assets	327,789	315,537
Current liabilities:
Accounts payable	13,249	11,732
Accrued compensation and employee related benefits	7,936	6,365
Accrued and other current liabilities	6,080	2,481
Current portion of operating lease liabilities	3,460	4,143
Restructuring liabilities	102	591
Current portion of long-term debt		9,633
Current portion of deferred revenue	2,808	558
Total current liabilities	33,635	35,503
Long-term debt, net of current portion	279,846	278,661
Operating lease liabilities, net of current portion	11,790	11,934
Other long-term liabilities	113	279
Deferred revenue, net of current portion	344	236
Total liabilities	325,728	326,613
Commitments and contingencies (Note 5)
Stockholders' equity (deficit):
Preferred stock, $0.001 par value - 5,000 shares authorized, no shares issued and outstanding at September 30, 2022 and December 31, 2021
Common stock, $0.001 par value - 495,000 shares authorized, 25,876 and 24,737 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively	26	25
Additional paid-in capital	390,432	351,422
Accumulated other comprehensive loss	(1,730)	(39)
Accumulated deficit	(386,667)	(362,484)
Total stockholders' equity (deficit)	2,061	(11,076)
Total liabilities and stockholders' equity (deficit)	$ 327,789	$ 315,537