Condensed Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 25,255	$ 6,942
Restricted cash, current	604	604
Accounts receivable, net	7,392	7,244
Inventory	17,195	16,850
Prepaid expenses and other current assets	3,665	4,479
Total current assets	54,111	36,119
Restricted cash, net of current portion	265	265
Intangible asset, net	24,733	26,778
Property and equipment, net	5,375	5,042
Operating lease right-of-use asset	109	270
Other non-current assets	575	426
Total assets	85,168	68,900
Current liabilities:
Accounts payable	3,690	2,804
Accrued compensation	3,142	3,701
Accrued liabilities	4,723	5,524
Operating lease liability	143	355
Current portion of long-term debt	5,139	1,894
Total current liabilities	16,837	14,278
Long-term debt	34,260	37,441
Total liabilities	51,097	51,719
Commitments and contingencies (Note 8)
Stockholders’ deficit:
Preferred stock, $0.001 par value,15,000,000 and 5,000,000 shares authorized, and no shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively
Common stock, $0.001 par value, 300,000,000 and 100,000,000 shares authorized, and 176,800,219 shares and 29,816,161 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively	176	29
Additional paid-in capital	328,740	300,809
Accumulated other comprehensive income	11	11
Accumulated deficit	(294,856)	(283,668)
Total stockholders' equity	34,071	17,181
Total liabilities and stockholders equity	$ 85,168	$ 68,900