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Securities - Schedule of Amortized Cost, Estimated Fair Value, and Allowance for Securities Credit Losses of Debt Securities Available-for-Sale and Held-to-Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Securities Financing Transaction [Line Items]
Available-for-sale, amortized cost	$ 847,272	$ 780,079
Available-for-sale, gross unrealized gains	1,545	194
Available-for-sale, gross unrealized losses	(21,317)	(26,381)
Available-for-sale, fair value	827,500	753,892
Allowance for Securities Credit Losses	0	0
Held-to-maturity, amortized cost	1,046,842	1,160,868
Held-to-maturity, gross unrealized gains	1,019	1,553
Held-to-maturity, gross unrealized losses	(94,944)	(93,983)
Held-to-maturity, fair value	952,917	1,068,438
Allowance for Securities Credit Losses	(967)	(1,133)	$ (1,128)
Total, amortized cost	1,894,114	1,940,947
Total, gross unrealized gains	2,564	1,747
Total, gross unrealized losses	(116,261)	(120,364)
Total, estimated fair value	1,780,417	1,822,330
U.S. government and agency obligations
Securities Financing Transaction [Line Items]
Available-for-sale, amortized cost	62,396	66,490
Available-for-sale, gross unrealized gains	11	0
Available-for-sale, gross unrealized losses	(5,022)	(5,796)
Available-for-sale, fair value	57,385	60,694
Allowance for Securities Credit Losses	0	0
Corporate debt securities
Securities Financing Transaction [Line Items]
Available-for-sale, amortized cost	14,042	10,096
Available-for-sale, gross unrealized gains	43	11
Available-for-sale, gross unrealized losses	(762)	(981)
Available-for-sale, fair value	13,323	9,126
Allowance for Securities Credit Losses	0	0
Held-to-maturity, amortized cost	65,350	69,809
Held-to-maturity, gross unrealized gains	775	391
Held-to-maturity, gross unrealized losses	(1,416)	(3,941)
Held-to-maturity, fair value	64,709	66,259
Allowance for Securities Credit Losses	(734)	(987)
Asset-backed securities
Securities Financing Transaction [Line Items]
Available-for-sale, amortized cost	197,116	295,796
Available-for-sale, gross unrealized gains	235	0
Available-for-sale, gross unrealized losses	(84)	(4,252)
Available-for-sale, fair value	197,267	291,544
Allowance for Securities Credit Losses	0	0
Agency residential
Securities Financing Transaction [Line Items]
Available-for-sale, amortized cost	465,108	298,107
Available-for-sale, gross unrealized gains	1,256	183
Available-for-sale, gross unrealized losses	(801)	(97)
Available-for-sale, fair value	465,563	298,193
Allowance for Securities Credit Losses	0	0
Held-to-maturity, amortized cost	680,052	765,632
Held-to-maturity, gross unrealized gains	44	901
Held-to-maturity, gross unrealized losses	(73,110)	(70,040)
Held-to-maturity, fair value	606,986	696,493
Allowance for Securities Credit Losses	0	0
Agency commercial
Securities Financing Transaction [Line Items]
Available-for-sale, amortized cost	108,610	109,590
Available-for-sale, gross unrealized gains	0	0
Available-for-sale, gross unrealized losses	(14,648)	(15,255)
Available-for-sale, fair value	93,962	94,335
Allowance for Securities Credit Losses	0	0
Held-to-maturity, amortized cost	79,925	82,734
Held-to-maturity, gross unrealized gains	1	10
Held-to-maturity, gross unrealized losses	(5,878)	(3,678)
Held-to-maturity, fair value	74,048	79,066
Allowance for Securities Credit Losses	0	0
State and municipal debt obligations
Securities Financing Transaction [Line Items]
Held-to-maturity, amortized cost	201,369	222,009
Held-to-maturity, gross unrealized gains	199	251
Held-to-maturity, gross unrealized losses	(13,665)	(14,550)
Held-to-maturity, fair value	187,903	207,710
Allowance for Securities Credit Losses	(31)	(39)
Non-agency commercial
Securities Financing Transaction [Line Items]
Held-to-maturity, amortized cost	20,146	20,684
Held-to-maturity, gross unrealized gains	0	0
Held-to-maturity, gross unrealized losses	(875)	(1,774)
Held-to-maturity, fair value	19,271	18,910
Allowance for Securities Credit Losses	(202)	(107)
Total mortgage-backed securities
Securities Financing Transaction [Line Items]
Available-for-sale, amortized cost	573,718	407,697
Available-for-sale, gross unrealized gains	1,256	183
Available-for-sale, gross unrealized losses	(15,449)	(15,352)
Available-for-sale, fair value	559,525	392,528
Allowance for Securities Credit Losses	0	0
Held-to-maturity, amortized cost	780,123	869,050
Held-to-maturity, gross unrealized gains	45	911
Held-to-maturity, gross unrealized losses	(79,863)	(75,492)
Held-to-maturity, fair value	700,305	794,469
Allowance for Securities Credit Losses	$ (202)	$ (107)

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