Condensed Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 51,306	$ 110,231
Short-term investments	53,826
Accounts receivable, net	17,019	11,832
Inventories	20,293	17,851
Prepaid expenses and other current assets	4,543	3,412
Total current assets	146,987	143,326
Property and equipment, net	9,671	7,697
Restricted cash	155	232
Other non-current assets	5,731	5,370
Total assets	162,544	156,625
Current liabilities:
Accounts payable	4,312	2,379
Accrued liabilities	19,621	19,802
Short-term debt		3,905
Total current liabilities	23,933	26,086
Long-term debt	74,340	44,786
Other liabilities	7,073	6,513
Total liabilities	105,346	77,385
Commitments and contingencies (Note 7)
Stockholders’ equity):
Preferred stock, $0.001 par value Shares authorized: 5,000,000 at September 30, 2022 and December 31, 2021 Shares issued and outstanding: none at September 30, 2022 and December 31, 2021
Common stock, $0.001 par value Shares authorized: 100,000,000 at September 30, 2022 and December 31, 2021 Shares issued and outstanding: 35,381,085 and 34,980,896 at September 30, 2022 and December 31, 2021, respectively	35	35
Additional paid-in capital	388,452	367,907
Accumulated other comprehensive income (loss)	(191)
Accumulated deficit	(331,098)	(288,702)
Total stockholders’ equity	57,198	79,240
Total liabilities and stockholders’ equity	$ 162,544	$ 156,625