Segment information - Schedule of Reconciliation Including Such Costs to Our Consolidated Net Loss (Details) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenues [Abstract]
Total revenue		$ 19,993		$ 11,430		$ 40,796	$ 24,017
Cost of Revenue [Abstract]
Total cost of revenue		23,912		13,773		48,162	28,468
Gross loss		(3,919)		(2,343)		(7,366)	(4,451)
Less: significant segment period costs:
Stock-based compensation expense		(688)		(1,045)		(725)	(2,468)
Personnel costs (excluding stock-based compensation)		(3,516)		(4,329)		(7,826)	(8,599)
Credit loss (credits) provisions		(284)		83		(192)	(587)
Other segment expenses	[1]	(3,092)		(4,290)		(5,950)	(8,321)
Interest expense		(731)		(117)		(1,442)	(434)
Interest income		5		118		11	299
Gain from disposal of investment in unconsolidated subsidiary		0		0		3,204	4,085
Gain on sale of Atlas		50		0		50	0
Gain (loss) from change in fair value of warrant liability		(2,836)		0		1,768	0
Other income (expense), net		71		(7)		75	29
Loss from unconsolidated subsidiary		(451)		(246)		(563)	(511)
Provision for income taxes		(39)		(65)		(293)	(54)
Net loss		(15,430)	$ (3,819)	(12,241)	$ (8,771)	(19,249)	(21,012)
Supplemental Income Statement Elements [Abstract]
Indirect personnel costs (excluding stock-based compensation) in cost of revenue		2,455		2,816		4,958	5,770
Depreciation and amortization		305		408		607	812
Capital expenditures		185		699		268	1,131
Total assets at period end		82,955		100,350		82,955	100,350
Product [Member]
Revenues [Abstract]
Total revenue		15,867		8,776		34,069	19,681
Cost of Revenue [Abstract]
Total cost of revenue		18,876		10,467		38,987	22,834
Service [Member]
Revenues [Abstract]
Total revenue		4,126		2,654		6,727	4,336
Cost of Revenue [Abstract]
Total cost of revenue		$ 5,036		$ 3,306		$ 9,175	$ 5,634

[1] (1) - Other segment expenses include research and development material and lab expenditures, professional services, marketing, employee travel, facility, insurance, depreciation and amortization and certain other period costs.