Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Revenue	$ 1,900	$ 329	$ 2,856	$ 1,111
Cost of revenue	1,554	701	2,831	1,245
Gross profit (loss)	346	(372)	25	(134)
Research and development expense	14,204	13,851	31,515	26,543
Sales, marketing, general and administrative expense	7,746	9,692	16,824	18,429
Impairment loss on intangible assets	3,027		3,027
Gain on disposal of fixed assets		(15)		(15)
Total operating expenses	24,977	23,528	51,366	44,957
Loss from operations	(24,631)	(23,900)	(51,341)	(45,091)
Bargain purchase gain, net of tax				1,706
Other income	785	3,570	1,416	4,209
Net loss before taxes	(23,846)	(20,330)	(49,925)	(39,176)
Income tax expense	(84)	(279)	(318)	(460)
Net loss	$ (23,930)	$ (20,609)	$ (50,243)	$ (39,636)
Net loss per share, basic	$ (0.11)	$ (0.12)	$ (0.25)	$ (0.23)
Net loss per share, diluted	$ (0.11)	$ (0.12)	$ (0.25)	$ (0.23)
Weighted-average shares outstanding - basic	208,665	177,302	202,706	176,009
Weighted-average shares outstanding - diluted	208,665	177,302	202,706	176,009