CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 37,645	$ 75,183
Restricted cash	28	621
Accounts receivable, less allowance of $651 and $321 in 2024 and 2023, respectively	5,956	3,189
Unbilled receivables	2,349	942
Inventory	5,832	6,582
Prepaid expenses and other current assets	1,900	2,391
Total current assets	53,710	88,908
Property and equipment, net	3,122	2,999
Other long term assets	2,069	2,292
Total assets	58,901	94,199
CURRENT LIABILITIES:
Accounts payable	1,607	1,214
Deferred grant funding	28	621
Deferred revenue	1,460	1,453
Accrued expenses and other current liabilities	5,573	5,419
Total current liabilities	8,729	8,768
Long term deferred revenue	1,054	968
Other noncurrent liabilities	78	64
Total liabilities	9,861	9,800
COMMITMENTS AND CONTINGENCIES (NOTE 13)
STOCKHOLDERS' EQUITY:
Additional paid-in capital	343,475	338,114
Accumulated deficit	(294,442)	(253,722)
Total stockholders' equity	49,040	84,399
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	58,901	94,199
Class A Common Stock
STOCKHOLDERS' EQUITY:
Common stock	5	5
Class B Common Stock
STOCKHOLDERS' EQUITY:
Common stock	2	2
Related Party
CURRENT LIABILITIES:
Due to related parties	$ 61	$ 61