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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 | Jun. 30, 2025 | Dec. 31, 2024
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Investment Securities Holdings by Classification, Type, and Maturity [Line Items] |  |
Available for Sale, Amortized Cost | $ 704,207 | $ 835,592
Available for Sale, Gross Unrealized Gains | 2,451 | 1,085
Available for Sale, Gross Unrealized Losses | (50,206) | (72,283)
Available for Sale, Fair Value | 656,452 | 764,394
Held-to-Maturity, Amortized Cost | (689,822) | (703,285)
Held to Maturity, Gross Unrecognized Gains | 54 | 27
Held to Maturity, Gross Unrecognized Losses | (60,218) | (79,860)
Investment Securities, Held to Maturity, Fair Value | 629,658 | 623,452
U.S. government and agency securities |  |
Investment Securities Holdings by Classification, Type, and Maturity [Line Items] |  |
Available for Sale, Amortized Cost | 13,275 | 14,934
Available for Sale, Gross Unrealized Gains | 0 | 0
Available for Sale, Gross Unrealized Losses | (1,765) | (2,390)
Available for Sale, Fair Value | 11,510 | 12,544
Held-to-Maturity, Amortized Cost | (151,274) | (151,216)
Held to Maturity, Gross Unrecognized Gains | 0 | 0
Held to Maturity, Gross Unrecognized Losses | (23,816) | (28,874)
Investment Securities, Held to Maturity, Fair Value | 127,458 | 122,342
Municipal securities |  |
Investment Securities Holdings by Classification, Type, and Maturity [Line Items] |  |
Available for Sale, Amortized Cost | 59,757 | 61,169
Available for Sale, Gross Unrealized Gains | 8 | 12
Available for Sale, Gross Unrealized Losses | (9,550) | (10,239)
Available for Sale, Fair Value | 50,215 | 50,942
Residential CMO and MBS(1) |  |
Investment Securities Holdings by Classification, Type, and Maturity [Line Items] |  |
Available for Sale, Amortized Cost | 342,461 | 407,520
Available for Sale, Gross Unrealized Gains | 1,660 | 711
Available for Sale, Gross Unrealized Losses | (26,907) | (38,900)
Available for Sale, Fair Value | 317,214 | 369,331
Held-to-Maturity, Amortized Cost | (232,244) | (244,309)
Held to Maturity, Gross Unrecognized Gains | 24 | 0
Held to Maturity, Gross Unrecognized Losses | (12,755) | (18,563)
Investment Securities, Held to Maturity, Fair Value | 219,513 | 225,746
Commercial CMO and MBS(1) |  |
Investment Securities Holdings by Classification, Type, and Maturity [Line Items] |  |
Available for Sale, Amortized Cost | 272,033 | 330,249
Available for Sale, Gross Unrealized Gains | 572 | 134
Available for Sale, Gross Unrealized Losses | (11,885) | (20,642)
Available for Sale, Fair Value | 260,720 | 309,741
Held-to-Maturity, Amortized Cost | (306,304) | (307,760)
Held to Maturity, Gross Unrecognized Gains | 30 | 27
Held to Maturity, Gross Unrecognized Losses | (23,647) | (32,423)
Investment Securities, Held to Maturity, Fair Value | 282,687 | 275,364
Corporate obligations |  |
Investment Securities Holdings by Classification, Type, and Maturity [Line Items] |  |
Available for Sale, Amortized Cost | 9,857 | 11,700
Available for Sale, Gross Unrealized Gains | 203 | 181
Available for Sale, Gross Unrealized Losses | (50) | (111)
Available for Sale, Fair Value | 10,010 | 11,770
Other asset-backed securities |  |
Investment Securities Holdings by Classification, Type, and Maturity [Line Items] |  |
Available for Sale, Amortized Cost | 6,824 | 10,020
Available for Sale, Gross Unrealized Gains | 8 | 47
Available for Sale, Gross Unrealized Losses | (49) | (1)
Available for Sale, Fair Value | $ 6,783 | $ 10,066

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- Definition 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). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 + Details
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- Definition 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). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 + Details
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- Definition 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). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479130/326-30-45-1 + Details
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