Investment Securities - Schedule of Investment in AFS and HTM Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 991,993	$ 1,055,146
Gross Unrealized Gains	29	269
Gross Unrealized Losses	(99,992)	(78,645)
Estimated Fair Value	892,030	976,770
Amortized Cost	797,858	855,810
Gross Unrealized Gains	17	8
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss	113,421	80,871
Estimated Fair Value	684,454	774,947
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	797,858	855,810
Gross Unrealized Gains	17	8
Gross Unrealized Losses	(113,421)	(80,871)
Estimated Fair Value	684,454	774,947
Less: allowance for credit losses	(409)	(1,030)
Total investment securities held-to-maturity	797,449	854,780
U.S. agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	298,330	355,249
Gross Unrealized Gains	1	0
Gross Unrealized Losses	(20,301)	(17,541)
Estimated Fair Value	278,030	337,708
Residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	549,831	620,540
Gross Unrealized Gains	28	152
Gross Unrealized Losses	(73,459)	(58,188)
Estimated Fair Value	476,400	562,504
Amortized Cost	501,554	544,402
Gross Unrealized Gains	0	0
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss	81,959	58,836
Estimated Fair Value	419,595	485,566
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	501,554	544,402
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(81,959)	(58,836)
Estimated Fair Value	419,595	485,566
Commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	58,543	68,931
Gross Unrealized Gains	0	117
Gross Unrealized Losses	(4,934)	(2,503)
Estimated Fair Value	53,609	66,545
Amortized Cost	83,924	85,760
Gross Unrealized Gains	0	0
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss	13,350	9,787
Estimated Fair Value	70,574	75,973
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	83,924	85,760
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(13,350)	(9,787)
Estimated Fair Value	70,574	75,973
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	83,289	8,426
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,275)	(380)
Estimated Fair Value	82,014	8,046
Amortized Cost	106,692	106,875
Gross Unrealized Gains	0	0
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss	13,942	6,933
Estimated Fair Value	92,750	99,942
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	106,692	106,875
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(13,942)	(6,933)
Estimated Fair Value	92,750	99,942
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,000	2,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(23)	(33)
Estimated Fair Value	1,977	1,967
Amortized Cost	105,688	118,773
Gross Unrealized Gains	17	8
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss	4,170	5,315
Estimated Fair Value	101,535	113,466
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	105,688	118,773
Gross Unrealized Gains	17	8
Gross Unrealized Losses	(4,170)	(5,315)
Estimated Fair Value	$ 101,535	$ 113,466