Leases (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) ft²	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	May 31, 2023 ft²	Jan. 31, 2023 ft²	Feb. 28, 2019 ft²
Leases
Area leased, sublease agreement | ft²	33,019			11,564	6,261	20,433
Amortization expense	$ 100	$ 300
Operating Leases:
Current portion of lease liabilities	503		$ 426
Other liabilities	$ 2,971		$ 3,074
Financial position	Other liabilities		Other liabilities
Total operating lease liabilities	$ 3,474		$ 3,500
Operating Leases
Operating Leases:
Gross cost	5,094		5,094
Accumulated amortization	(1,378)		(1,235)
Other assets	$ 3,716		$ 3,859