Lease obligation (Details) $ in Thousands		3 Months Ended
	Aug. 11, 2023 USD ($) ft²	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Feb. 01, 2024 USD ($)	Dec. 31, 2023 USD ($)
Change in operating lease, right-of-use assets		$ (1,057)	$ (469)
Change in operating lease liabilities		891	(683)
Operating lease, right-of-use assets		39,204			$ 13,510
Lease liability		41,995			$ 17,093
Restricted cash included in deposits and other noncurrent assets		2,875	1,515
Lease expense		$ 1,700	$ 900
Weighted average remaining lease term		5 years 6 months
Weighted average incremental borrowing rate		6.90%
Total minimum lease payments
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]		Other Liabilities, Current			Other Liabilities, Current
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]		Other Liabilities, Noncurrent			Other Liabilities, Noncurrent
75 and 64 Sidney Street
Restricted cash included in deposits and other noncurrent assets		$ 2,900
75 Hayden avenue
Area of additional facility leased | ft²	61,307
Leasehold improvements amount	$ 1,800
Operating lease, right-of-use assets				$ 26,700
Lease liability				$ 26,700