Benefit Plans - 401(k) Savings Plan (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
401(k) Savings Plan
Maximum discretionary contribution matched by employer for each employee's contribution	$ 3,000	$ 3,000
Contribution expense	$ 942,000	$ 944,000	$ 942,000