Investment Securities - Amortized, Gross Unrealized Gains and Losses, and Fair Value on Investment Securities, Available for Sale and Held to Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Investment Securities Holdings by Classification, Type, and Maturity [Line Items]
Available for Sale, Amortized Cost	$ 772,086	$ 835,592
Available for Sale, Gross Unrealized Gains	1,875	1,085
Available for Sale, Gross Unrealized Losses	(57,619)	(72,283)
Available for Sale, Fair Value	716,342	764,394
Held-to-Maturity, Amortized Cost	(697,561)	(703,285)
Held to Maturity, Gross Unrecognized Gains	28	27
Held to Maturity, Gross Unrecognized Losses	(64,941)	(79,860)
Investment Securities, Held to Maturity, Fair Value	632,648	623,452
U.S. government and agency securities
Investment Securities Holdings by Classification, Type, and Maturity [Line Items]
Available for Sale, Amortized Cost	13,276	14,934
Available for Sale, Gross Unrealized Gains	0	0
Available for Sale, Gross Unrealized Losses	(1,840)	(2,390)
Available for Sale, Fair Value	11,436	12,544
Held-to-Maturity, Amortized Cost	(151,246)	(151,216)
Held to Maturity, Gross Unrecognized Gains	0	0
Held to Maturity, Gross Unrecognized Losses	(25,086)	(28,874)
Investment Securities, Held to Maturity, Fair Value	126,160	122,342
Municipal securities
Investment Securities Holdings by Classification, Type, and Maturity [Line Items]
Available for Sale, Amortized Cost	59,926	61,169
Available for Sale, Gross Unrealized Gains	9	12
Available for Sale, Gross Unrealized Losses	(9,210)	(10,239)
Available for Sale, Fair Value	50,725	50,942
Residential CMO and MBS(1)
Investment Securities Holdings by Classification, Type, and Maturity [Line Items]
Available for Sale, Amortized Cost	388,423	407,520
Available for Sale, Gross Unrealized Gains	1,415	711
Available for Sale, Gross Unrealized Losses	(32,978)	(38,900)
Available for Sale, Fair Value	356,860	369,331
Held-to-Maturity, Amortized Cost	(239,351)	(244,309)
Held to Maturity, Gross Unrecognized Gains	0	0
Held to Maturity, Gross Unrecognized Losses	(13,374)	(18,563)
Investment Securities, Held to Maturity, Fair Value	225,977	225,746
Commercial CMO and MBS(1)
Investment Securities Holdings by Classification, Type, and Maturity [Line Items]
Available for Sale, Amortized Cost	289,140	330,249
Available for Sale, Gross Unrealized Gains	191	134
Available for Sale, Gross Unrealized Losses	(13,491)	(20,642)
Available for Sale, Fair Value	275,840	309,741
Held-to-Maturity, Amortized Cost	(306,964)	(307,760)
Held to Maturity, Gross Unrecognized Gains	28	27
Held to Maturity, Gross Unrecognized Losses	(26,481)	(32,423)
Investment Securities, Held to Maturity, Fair Value	280,511	275,364
Corporate obligations
Investment Securities Holdings by Classification, Type, and Maturity [Line Items]
Available for Sale, Amortized Cost	11,714	11,700
Available for Sale, Gross Unrealized Gains	200	181
Available for Sale, Gross Unrealized Losses	(84)	(111)
Available for Sale, Fair Value	11,830	11,770
Other asset-backed securities
Investment Securities Holdings by Classification, Type, and Maturity [Line Items]
Available for Sale, Amortized Cost	9,607	10,020
Available for Sale, Gross Unrealized Gains	60	47
Available for Sale, Gross Unrealized Losses	(16)	(1)
Available for Sale, Fair Value	$ 9,651	$ 10,066

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount excluding accrued interest, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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