CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash	$ 195,375	$ 201,182
Accounts receivable	38,620	27,611
Inventory	23,961	20,605
Prepaid expenses and other current assets	3,774	2,896
Total current assets	261,730	252,294
Property and equipment, net	19,161	19,223
Restricted cash	750	500
Operating lease right-of-use assets	4,939	5,130
Other non-current assets	508
Total assets	287,088	277,147
Current liabilities:
Accounts payable	4,329	3,341
Accrued expenses and other current liabilities	22,581	18,635
Deferred revenue	244	241
Operating lease liabilities	1,481	1,444
Total current liabilities	28,635	23,661
Long-term debt, net of discount and current portion	58,802	58,696
Operating lease liabilities, net of current portion	7,026	7,415
Total liabilities	94,463	89,772
Commitments and contingencies (Note 8)
Stockholders' equity:
Preferred stock, no par value; 25,000,000 shares authorized; no shares issued or outstanding
Common stock, no par value; 150,000,000 shares authorized; 32,534,003 shares and 32,141,368 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	674,156	666,277
Accumulated other comprehensive loss	(218)	(225)
Accumulated deficit	(481,313)	(478,677)
Total stockholders' equity	192,625	187,375
Total liabilities and stockholders' equity	$ 287,088	$ 277,147