Parent Company Only Financial Information - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net income	$ 8,099	$ 7,835	$ 8,686	$ 4,044	$ 10,249	$ 23,442	$ 25,035	$ 18,219	$ 28,664	$ 76,945	$ 81,793
Deferred income tax provision (benefit)									3,721	144	(1,725)
Net (gain) loss from fair value adjustments									(2,573)	(5,728)	12,995
Stock-based compensation expense									5,604	6,807	6,829
Net cash provided by (used in) operating activities									34,585	85,755	88,598
Net cash provided by (used in) investing activities									(94,261)	(351,818)	(106,783)
Proceeds from long-term borrowing									661,050	63,603	122,843
Repayment of long-term borrowings									(265,001)	(55,685)	(341,643)
Purchase of treasury stock									(13,165)	(29,675)	(11,370)
Net cash provided by (used in) financing activities									80,079	336,094	(57,480)
Net increase (decrease) in cash and cash equivalents, and restricted cash									20,403	70,031	(75,665)
Cash, cash equivalents, and restricted cash, beginning of period				151,754				81,723	151,754	81,723	157,388
Cash, cash equivalents, and restricted cash, end of period	172,157				151,754				172,157	151,754	81,723
Holding Company
Net income									28,664	76,945	81,793
(Equity) deficit in undistributed earnings of the Bank									89,173	(26,002)	(92,908)
Deferred income tax provision (benefit)									774	2,111	(3,939)
Net (gain) loss from fair value adjustments									(2,405)	(7,207)	13,604
Stock-based compensation expense									5,604	6,807	6,829
Net change in operating assets and liabilities									(1,189)	(2,866)	2,927
Net cash provided by (used in) operating activities									120,621	49,788	8,306
Investment in Bank									0	(50,000)	(15,000)
Net cash provided by (used in) investing activities									0	(50,000)	(15,000)
Proceeds from long-term borrowing									0	63,603	122,843
Repayment of long-term borrowings									0	0	(90,250)
Purchase of treasury stock									(13,165)	(29,675)	(11,370)
Cash dividends paid									(26,260)	(27,031)	(26,524)
Net cash provided by (used in) financing activities									(39,425)	6,897	(5,301)
Net increase (decrease) in cash and cash equivalents, and restricted cash									81,196	6,685	(11,995)
Cash, cash equivalents, and restricted cash, beginning of period				$ 22,723				$ 16,038	22,723	16,038	28,033
Cash, cash equivalents, and restricted cash, end of period	$ 103,919				$ 22,723				$ 103,919	$ 22,723	$ 16,038