CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 14,606	$ 12,138
Investments	1,145	1,081
Trade accounts receivable, net	2,217	2,622
Inventory	3,249	3,310
Prepaid expenses	1,068	380
Purchase obligation put option asset	0	3,419
Other current assets	1,848	1,516
Total current assets	24,133	24,466
Property and equipment, net	3,197	2,389
Finance lease assets, net	1,225	1,518
Operating lease right of use assets, net	957	1,177
Other non-current assets	1,210	1,816
Total assets	30,722	31,366
Current liabilities:
Accounts payable	5,108	4,796
Accrued liabilities	3,351	3,243
Accrued interest	1,014	164
Deferred revenue and income, current	1,272	1,545
Current portion of convertible notes	726	726
Common warrant liability	3,035	0
Finance lease, current	685	583
Operating lease, current	940	977
Total current liabilities	16,131	12,034
Finance lease, non-current	81	262
Operating lease, non-current	328	570
Deferred income, non-current	1,110	1,122
Other non-current liabilities	1,197	1,164
Convertible notes, non-current	37,655	36,102
Total liabilities	56,502	51,254
Commitments and contingencies (see Note 14)
Stockholders’ deficit:
Preferred shares, $0.001 par value; $5,000,000 preferred shares authorized with no shares issued and outstanding on March 31, 2024 and December 31, 2023	0	0
Common stock, $0.001 par value; $450,000,000 common shares authorized with 21,811,706 shares issued and outstanding on March 31, 2024 and 14,569,500 shares issued and outstanding on December 31, 2023	21	14
Contributed capital	702,971	694,634
Treasury stock	(45,067)	(45,067)
Accumulated deficit	(683,087)	(668,857)
Accumulated other comprehensive loss	(618)	(612)
Total stockholders’ deficit	(25,780)	(19,888)
Total liabilities and stockholders’ deficit	$ 30,722	$ 31,366