Discontinued operations - Loss on Disposal of Global Cooling (Details) $ in Thousands	6 Months Ended
Jun. 30, 2024 USD ($)
Discontinued Operations [Line Items]
RIF employee costs	$ 1,546
Former Global Cooling employees	1,925
Total employment related divestiture expenditures	3,471
Severance
Discontinued Operations [Line Items]
RIF employee costs	291
Former Global Cooling employees	0
Total employment related divestiture expenditures	291
Stock Compensation
Discontinued Operations [Line Items]
RIF employee costs	1,255
Former Global Cooling employees	1,925
Total employment related divestiture expenditures	$ 3,180

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