CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 798	$ 2,118
Insurance receivable	408	100
Prepaids and other current assets	4,187	8,513
Total current assets	5,393	10,731
Property, machinery and equipment, net	2,369	3,252
Intangible assets, net	265	341
Operating lease right-of-use asset	4,488	5,350
Restricted cash, non-current	500	373
Other non-current assets	1,090	602
Total assets	14,105	20,649
Current liabilities:
Accounts payable	5,677	2,805
Accrued liabilities	3,629	4,754
Loan payable, current	2,337	2,273
Contract liabilities, current	495	0
Operating lease liability, current	1,358	1,268
Litigation settlement contingency	526	0
Other current liabilities	4	9
Total current liabilities	14,026	11,109
Contract liabilities, non-current	1,143	998
Warrant liability	3	3
Operating lease liability, non-current	3,829	4,863
Other non-current liabilities	508	489
Total non-current liabilities	5,483	6,353
Total liabilities	19,509	17,462
Commitments and Contingencies (Note 12)
Stockholders’ equity (deficit):
Preferred stock, $0.00001 par value; 20,000,000 shares authorized and 0 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	0	0
Additional paid-in capital	390,730	376,234
Accumulated deficit	(396,134)	(373,047)
Total stockholders’ equity (deficit)	(5,404)	3,187
Total liabilities and stockholders’ equity (deficit)	14,105	20,649
Common Class A
Stockholders’ equity (deficit):
Common stock, value	0	0
Common Class B
Stockholders’ equity (deficit):
Common stock, value	$ 0	$ 0