Lease obligation (Details) $ in Thousands		3 Months Ended		6 Months Ended
	Aug. 11, 2023 USD ($) ft²	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Feb. 01, 2024 USD ($)	Dec. 31, 2023 USD ($)
Operating lease, right-of-use assets		$ 35,514		$ 35,514			$ 13,510
Lease liability		40,205		40,205			17,093
Restricted cash included in deposits and other noncurrent assets		2,874		2,874			$ 1,593
Impairment charge				2,776
Lease expense		$ 4,400	$ 900	$ 6,100	$ 1,800
Weighted average remaining lease term		5 years 2 months 12 days		5 years 2 months 12 days
Weighted average incremental borrowing rate		6.90%		6.90%
75 and 64 Sidney Street
Restricted cash included in deposits and other noncurrent assets		$ 2,900		$ 2,900
64 Sidney Street
Impairment charge		$ 2,800
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