Discontinued operations - Schedule of Components of Loss from Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Discontinued Operations [Line Items]
Loss on disposal			$ (8,897)	$ 0
Loss before income taxes	$ (13,573)	$ (4,678)	(19,572)	(9,671)
Income tax expense	0	(3)	(10)	(3)
Loss from discontinued operations	(13,573)	(4,681)	(19,582)	(9,674)
Global Cooling | Discontinued Operations, Disposed of by Sale
Discontinued Operations [Line Items]
Revenue	2,209	10,271	7,157	18,791
Cost of revenue	1,789	9,483	8,389	17,948
Gross profit	420	788	(1,232)	843
Operating expenses	(5,105)	(5,441)	(9,418)	(10,470)
Other income (expense), net	9	(25)	(25)	(44)
Loss on disposal	(8,897)	0	(8,897)	0
Loss before income taxes	(13,573)	(4,678)	(19,572)	(9,671)
Income tax expense	0	(3)	(10)	(3)
Loss from discontinued operations	$ (13,573)	$ (4,681)	$ (19,582)	$ (9,674)