Commitments and contingencies (Details) - USD ($)	Dec. 31, 2024	Jan. 30, 2024	Dec. 31, 2023	Sep. 13, 2022
Commitments and Contingencies Disclosure [Abstract]
Contractual obligation	$ 1,300,000
Leases not yet commenced	6,900,000		$ 5,800,000
Letters of credit outstanding,	0
Estimated range of loss in excess of amounts accrued	$ 12,000,000
Estimate of possible loss amount		$ 1,200,000		$ 1,900,000