CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues:
Total revenues	$ 4,657	$ 8,202	$ 15,900	$ 22,060
Cost of revenues (exclusive of depreciation and amortization shown separately below)	4,500	8,141	15,448	21,654
Operating expenses:
Research and development	3,328	5,127	9,907	15,338
General and administrative	10,717	9,347	29,916	30,611
Depreciation and amortization	2,836	2,822	8,332	7,946
Impairment of assets	210	15,170	16,820	15,170
Total operating expenses	17,091	32,466	64,975	69,065
Loss from operations	(16,934)	(32,405)	(64,523)	(68,659)
Other income (expenses):
Investment income	873	1,745	3,208	5,447
Interest expenses	(27)	(86)	(106)	(313)
Gain (loss) in fair value of derivatives	17	(43)	(15)	237
Gain (loss) in fair value of common stock warrants liability	163	(2,285)	4,048	(2,913)
Gain (loss) in fair value of earnout liability	0	(2,941)	2,462	(2,401)
Other expenses, net	(396)	(517)	(387)	(1,170)
Total other income (expenses), net	630	(4,127)	9,210	(1,113)
Loss before income tax provision	(16,304)	(36,532)	(55,313)	(69,772)
Income tax provision	(78)	(231)	(257)	(403)
Net loss	(16,382)	(36,763)	(55,570)	(70,175)
Other comprehensive income (loss):
Unrealized gain on marketable securities	311	690	694	2,210
Foreign currency translation adjustment	(2,509)	1,828	4,431	(3,707)
Total other comprehensive (loss) income	(2,198)	2,518	5,125	(1,497)
Total comprehensive loss	$ (18,580)	$ (34,245)	$ (50,445)	$ (71,672)
Net loss per share, basic (in dollars per share)	$ (0.11)	$ (0.26)	$ (0.38)	$ (0.49)
Net loss per share, diluted (in dollars per share)	$ (0.11)	$ (0.26)	$ (0.38)	$ (0.49)
Weighted-average common shares outstanding, basic (in shares)	149,340,474	143,387,618	147,399,111	142,720,941
Weighted-average common shares outstanding, diluted (in shares)	149,340,474	143,387,618	147,399,111	142,720,941
Products
Revenues:
Total revenues	$ 4,657	$ 8,202	$ 15,900	$ 22,057
Services
Revenues:
Total revenues	$ 0	$ 0	$ 0	$ 3