Commitments and contingencies (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 05, 2023	Dec. 31, 2022	May 03, 2021
Other Commitments [Line Items]
Short-term purchase obligations	$ 14,300		$ 14,300
Sales and excise tax payable	5,200		5,200			$ 3,700
Sales taxes assessed	$ 100		$ 100			$ 300
Common stock, shares issued (in shares)	43,831,351		43,831,351			42,832,231
Common stock, shares outstanding (in shares)	43,831,351		43,831,351			42,832,231
Gain on settlement of Global Cooling escrow	$ 0	$ 0	$ 5,115	$ 0
GCI Escrow
Other Commitments [Line Items]
Common stock, shares issued (in shares)							6,646,870
GCI Escrow | General Escrow Shares
Other Commitments [Line Items]
Shares deposited into escrow, percent							5.00%
GCI Escrow | General Escrow Shares | Settled Litigation
Other Commitments [Line Items]
Shares deposited into escrow, percent					65.00%
Common stock, shares outstanding (in shares)					216,024
GCI Escrow | Escrow Shares
Other Commitments [Line Items]
Shares deposited into escrow, percent							9.00%
Shares deposited into escrow, holding term							18 months