CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 45,765	$ 75,183
Restricted cash	219	621
Accounts receivable, less allowance of $482 and $321 as of September 30, 2024 and December 31, 2023, respectively	6,800	3,189
Unbilled receivables	2,264	942
Inventory	7,044	6,582
Prepaid expenses and other current assets	2,002	2,391
Total current assets	64,094	88,908
Property and equipment, net	3,125	2,999
Other long term assets	2,167	2,292
Total assets	69,386	94,199
CURRENT LIABILITIES:
Accounts payable	1,404	1,214
Deferred grant funding	219	621
Deferred revenue	1,413	1,453
Accrued expenses and other current liabilities	6,870	5,419
Total current liabilities	9,959	8,768
Long term deferred revenue	1,105	968
Other noncurrent liabilities	0	64
Total liabilities	11,064	9,800
COMMITMENTS AND CONTINGENCIES (NOTE 13)
STOCKHOLDERS' EQUITY:
Additional paid-in capital	342,367	338,114
Accumulated deficit	(284,052)	(253,722)
Total stockholders' equity	58,322	84,399
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	69,386	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	$ 53	$ 61