Income taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Current:
Foreign	$ (126)	$ 0	$ 0
Deferred:
Total deferred tax provision	65	(64)	(62)
Income tax expense	49	(38)	(64)
Continuing Operations
Current:
State	100	26	6
Total current tax provision	(26)	26	6
Deferred:
Federal	38	(64)	(70)
State	37	0	0
Total deferred tax provision	75	(64)	(70)
Income tax expense	$ 49	$ (38)	$ (64)