Lease obligation (Details) $ in Thousands		3 Months Ended			9 Months Ended
	Aug. 11, 2023 USD ($) ft²	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Feb. 01, 2024 USD ($)	Dec. 31, 2023 USD ($)
Operating lease, right-of-use assets		$ 34,523			$ 34,523			$ 13,510
Lease liability		38,368			38,368			17,093
Restricted cash included in deposits and other noncurrent assets		2,874			2,874			$ 1,593
Impairment charge					2,776
Other income from sublease		200			200
Lease expense		$ 1,900		$ 900	$ 8,000	$ 2,700
Weighted average remaining lease term		4 years 10 months 24 days			4 years 10 months 24 days
Weighted average incremental borrowing rate		6.80%			6.80%
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