Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
REVENUE:
Revenue from contract with customer	$ 202	$ 1,464
Cost of Revenue	778	15,319
Gross loss	(576)	(13,855)
OPERATING EXPENSES:
Research and Development Expense	16,389	26,171
Selling and Marketing Expense	551	12,528
General and Administrative Expense	18,312	25,234
Impairment, Long-Lived Asset, Held-for-Use	0	9,988
Total operating expenses	35,252	73,921
LOSS FROM OPERATIONS	(35,828)	(87,776)
OTHER INCOME (EXPENSE):
Change in fair value of convertible note and warrant liabilities	0	(858)
Interest income and other	799	1,317
Interest expense and other	(433)	248
Total other income (expense), net	366	707
Loss before income tax	(35,462)	(87,069)
(Benefit) provision for income tax	(2)	57
Net loss	(35,460)	(87,126)
Change in net unrealized (loss) gain on available-for-sale securities, net of tax	(5)	1,264
Change in fair value due to instrument-specific credit risk, net of tax	0	(21)
Net losses reclassified into income during the period, net of tax	0	46
Comprehensive loss	$ (35,465)	$ (85,837)
PER SHARE DATA
Net loss per common share (basic and diluted) (in dollars per share)	$ (4.89)	$ (14.95)
Weighted average common shares outstanding (basic and diluted) (in shares)	7,253,683	5,827,721
Prototype Sales [Member]
REVENUE:
Revenue from contract with customer	$ 97	$ 477
Development Contracts [Member]
REVENUE:
Revenue from contract with customer	$ 105	$ 987