Other Comprehensive (Loss) Income - Schedule of Components of Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Before Tax
Net unrealized loss on securities available-for-sale	$ (28,150)	$ (81,384)	$ (20,070)	$ (205,329)
Less: Reclassification adjustment for net gain (loss) included in net income	(5)	(4)	14	172
Total unrealized gain (loss) on investment securities available-for-sale	(28,155)	(81,388)	(20,056)	(205,157)
Net unrealized loss on securities transferred to held-to-maturity				(66,193)
Amortization of unrealized loss on securities transferred to held-to-maturity	1,824	2,382	5,638	5,071
Total unrealized gain (loss) recognized on investment securities held-to-maturity				(61,122)
Net unrealized gain on derivatives				284
Other comprehensive income (loss)	(26,331)	(79,006)	(14,418)	(265,995)
Tax Effect
Net unrealized gain (loss) on securities available-for-sale	6,836	21,355	4,618	53,876
Less: Reclassification adjustment for net gain (loss) included in net income	1	1	(4)	(58)
Total unrealized gain (loss) on investment securities available-for-sale	6,837	21,356	4,614	53,818
Net unrealized loss on securities transferred to held-to-maturity				17,098
Amortization of unrealized loss on securities transferred to held-to-maturity	(424)	(620)	(2,194)	(1,318)
Total unrealized gain (loss) recognized on investment securities held-to-maturity				15,780
Net unrealized gain on derivatives				0
Other comprehensive income (loss)	6,413	20,736	2,420	69,598
Net of Tax
Less: Reclassification adjustment for net gain (loss) included in net income	(4)	(3)	10	114
Total unrealized (loss) gain on investment securities available-for-sale	(21,318)	(60,032)	(15,442)	(151,339)
Net unrealized loss on securities transferred to held-to-maturity				(49,095)
Amortization of unrealized loss on securities transferred to held-to-maturity	1,400	1,762	3,444	3,753
Total unrealized gain (loss) recognized on investment securities held-to-maturity	1,400	1,762	3,444	(45,342)
Net unrealized gain on derivatives	0	0	0	284
Other comprehensive (loss) income	$ (19,918)	$ (58,270)	$ (11,998)	$ (196,397)