Summary of Significant Accounting Policies - New Accounting Standards Adopted (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Adoption of New Accounting Standards
Retained earnings	$ 241,964	$ 234,049
Allowance for credit losses		45,464	$ 56,548	$ 72,387
Pretax cumulative effect adjustment of a change in accounting principle	10,562	(7,565)	33,033
Less: income taxes	(3,149)	(6,629)	(9,643)
Net income (loss)	$ 7,413	(14,194)	$ 23,390
After Adoption of ASC
Adoption of New Accounting Standards
Allowance for credit losses		44,193
Liability for unfunded commitments		579
ASU 2016-13 | Cumulative effect adjustment (Note 2)
Adoption of New Accounting Standards
Retained earnings		778
Allowance for credit losses		(1,651)
Liability for unfunded commitments		579
Pretax cumulative effect adjustment of a change in accounting principle		(1,072)
Less: income taxes		294
Net income (loss)		(778)
ASU 2022-02 | Cumulative effect adjustment (Note 2)
Adoption of New Accounting Standards
Retained earnings		(276)
Allowance for credit losses		380
Pretax cumulative effect adjustment of a change in accounting principle		380
Less: income taxes		(104)
Net income (loss)		$ 276