Commitments and Contingencies - Operating and Finance Leases (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Commitments and Contingencies
Operating lease, weighted average discount rate	5.60%
Operating lease, weighted average remaining lease term	13 years 6 months
Operating lease
2024	$ 6,539,000
2025	6,737,000
2026	6,942,000
2027	7,154,000
2028	5,934,000
Thereafter	60,542,000
Total future minimum lease payments	93,848,000
Imputed interest	(29,347,000)
Total	64,501,000	$ 5,308,000
Fixed operating lease cost	5,400,000	601,000	$ 731,000
Fixed lease finance cost		2,600,000	2,800,000
Variable operating lease costs	$ 180,000	$ 97,000	$ 2,600,000