Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Segment Reporting Information [Line Items]
Revenue	$ 512	$ 316
Cost of revenue	11,890	21,381
Gross profit	(11,378)	(21,065)
Operating expenses
Research and development	6,990	6,419
Settlement on accrued research and development expenses	0	0
Sales and marketing	5,616	2,629
General and administrative	9,195	13,674
Loss on disposal of property, plant, and equipment	328	44
Asset impairment on long-lived assets	0	0
Impairment of intangible assets, including goodwill	2,255	0
Credit loss expense - short-term note receivable	143	0
Total operating expenses	24,527	22,766
Loss from operations	(35,905)	(43,831)
Depreciation and amortization expense	8,081	17,527
Interest expense	(2,478)	(2,302)
Net loss on digital assets	(1,946)	0
Net assets	19,241		$ 7,759
AIEV
Segment Reporting Information [Line Items]
Revenue	224
Cost of revenue	11,746
Gross profit	(11,522)
Operating expenses
Research and development	6,986
Settlement on accrued research and development expenses	0
Sales and marketing	4,978
General and administrative	5,647
Loss on disposal of property, plant, and equipment	328
Asset impairment on long-lived assets	0
Impairment of intangible assets, including goodwill	2,072
Credit loss expense - short-term note receivable	0
Total operating expenses	20,011
Loss from operations	(31,533)
Depreciation and amortization expense	8,081
Interest expense	(2,478)
Net loss on digital assets	0
Net assets	(2,774)
Robotics
Segment Reporting Information [Line Items]
Revenue	288	$ 0
Cost of revenue	144
Gross profit	144
Operating expenses
Research and development	0
Settlement on accrued research and development expenses	0
Sales and marketing	0
General and administrative	0
Loss on disposal of property, plant, and equipment	0
Asset impairment on long-lived assets	0
Impairment of intangible assets, including goodwill	0
Credit loss expense - short-term note receivable	0
Total operating expenses	0
Loss from operations	144
Depreciation and amortization expense	0
Interest expense	0
Net loss on digital assets	0
Net assets	144
AIXC
Segment Reporting Information [Line Items]
Revenue	0
Cost of revenue	0
Gross profit	0
Operating expenses
Research and development	4
Settlement on accrued research and development expenses	0
Sales and marketing	638
General and administrative	3,548
Loss on disposal of property, plant, and equipment	0
Asset impairment on long-lived assets	0
Impairment of intangible assets, including goodwill	183
Credit loss expense - short-term note receivable	143
Total operating expenses	4,516
Loss from operations	(4,516)
Depreciation and amortization expense	0
Interest expense	0
Net loss on digital assets	(1,946)
Net assets	$ 21,871