Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 26,761	$ 19,264
Restricted cash, current	502	503
Short-term investments	39,569	54,194
Financial assets:
Accounts receivable	12,271	11,920
Contract assets	1,279	4,375
Unbilled receivables	2,982	2,751
Total financial assets	16,532	19,046
Less: allowances	(49)	(162)
Total financial assets, net	16,483	18,884
Inventories	1,945	1,799
Prepaid expenses and other current assets	3,469	4,128
Total current assets	88,729	98,772
Restricted cash	1,062	1,062
Investment in non-marketable equity securities	2,798	2,798
Right-of-use assets - Operating leases, net	27,260	28,700
Property and equipment, net	14,984	14,197
Goodwill	2,463	2,463
Other non-current assets	950	1,019
Total assets	138,246	149,011
Current liabilities:
Accounts payable	1,468	2,838
Accrued compensation	7,262	11,410
Other accrued liabilities	3,406	6,223
Current portion of lease obligations - Operating leases	3,001	2,827
Deferred revenue	100	350
Total current liabilities	15,237	23,648
Deferred revenue, net of current portion	100	100
Long-term lease obligations - Operating leases	26,606	28,163
Long-term debt	39,373	28,905
Other long-term liabilities	1,299	1,268
Total liabilities	82,615	82,084
Commitments and Contingencies (Note 10)
Stockholders' equity:
Preferred stock, $0.0001 par value per share; 5,000 shares authorized, none issued and outstanding	0	0
Common stock, $0.0001 par value per share; 200,000 shares authorized; 90,254 shares and 81,850 shares issued and outstanding as of June 30, 2025 and December 31, 2024, respectively	9	8
Additional paid-in capital	652,391	629,673
Accumulated other comprehensive income	(3)	52
Accumulated deficit	(596,766)	(562,806)
Total stockholders' equity	55,631	66,927
Total liabilities and stockholders' equity	$ 138,246	$ 149,011