Other Comprehensive (Loss) Income - Schedule of Changes in Each Component of Accumulated Other Comprehensive (Loss) Income, Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investment securities available-for-sale:
Beginning balance	$ 1,219,766	$ 1,252,720	$ 1,228,321	$ 1,350,775
Amortization of unrealized loss on securities transferred to held-to-maturity	1,400	1,762	3,444	3,753
Other comprehensive (loss) income	(19,918)	(58,270)	(11,998)	(196,397)
Ending balance	1,215,884	1,219,771	1,215,884	1,219,771
Securities Available For Sale
Investment securities available-for-sale:
Beginning balance	(148,897)	(105,265)	(154,773)	(13,958)
Other comprehensive loss (income) before reclassifications	(21,314)	(60,029)	(15,452)	(151,453)
Amounts reclassified from accumulated other comprehensive income (loss)	(4)	(3)	10	114
Amortization of unrealized loss on securities transferred to held-to-maturity	0	0	0	0
Other comprehensive (loss) income	(21,318)	(60,032)	(15,442)	(151,339)
Ending balance	(170,215)	(165,297)	(170,215)	(165,297)
Securities Held to Maturity
Investment securities available-for-sale:
Beginning balance	(42,690)	(47,104)	(44,734)	0
Other comprehensive loss (income) before reclassifications	0	0	0	(49,095)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Amortization of unrealized loss on securities transferred to held-to-maturity	1,400	1,762	3,444	3,753
Other comprehensive (loss) income	1,400	1,762	3,444	(45,342)
Ending balance	(41,290)	(45,342)	(41,290)	(45,342)
Derivatives
Investment securities available-for-sale:
Beginning balance	0	0	0	(284)
Other comprehensive loss (income) before reclassifications	0	0	0	284
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Amortization of unrealized loss on securities transferred to held-to-maturity	0	0	0	0
Other comprehensive (loss) income	0	0	0	284
Ending balance	0	0	0	0
Accumulated Other Comprehensive Income (Loss)
Investment securities available-for-sale:
Beginning balance	(191,587)	(152,369)	(199,507)	(14,242)
Other comprehensive loss (income) before reclassifications	(21,314)	(60,029)	(15,452)	(200,264)
Amounts reclassified from accumulated other comprehensive income (loss)	(4)	(3)	10	114
Amortization of unrealized loss on securities transferred to held-to-maturity	1,400	1,762	3,444	3,753
Other comprehensive (loss) income	(19,918)	(58,270)	(11,998)	(196,397)
Ending balance	$ (211,505)	$ (210,639)	$ (211,505)	$ (210,639)