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Securities - Schedule of Available-for-sale Securities Reconciliation (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Total, post ASU 2019-04 | $ 524,664 | $ 512,684
Gross Unrealized Gains | 3,591 | 1,220
Gross Unrealized Losses | (17,160) | (31,576)
Securities available-for-sale, at fair value | 511,095 | 482,328
Fair Value, post ASU 2019-04 | 511,095 | 482,328
U.S. Treasury |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total, post ASU 2019-04 | 31,823 | 83,330
Gross Unrealized Losses | (2,231) | (7,104)
Securities available-for-sale, at fair value | 29,592 | 76,226
Fair Value, post ASU 2019-04 | 29,592 | 76,226
U.S. Government-sponsored enterprises (GSEs) |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total, post ASU 2019-04 | 19,446 | 38,917
Gross Unrealized Gains | 88 | 453
Gross Unrealized Losses | (130) | (182)
Securities available-for-sale, at fair value | 19,404 | 39,188
Fair Value, post ASU 2019-04 | 19,404 | 39,188
Municipal securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total, post ASU 2019-04 | 34,403 | 18,277
Gross Unrealized Gains | 316 |
Gross Unrealized Losses | (489) | (587)
Securities available-for-sale, at fair value | 34,230 | 17,690
Fair Value, post ASU 2019-04 | 34,230 | 17,690
Other Debt Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total, post ASU 2019-04 | 25,938 | 41,321
Gross Unrealized Gains | 214 | 252
Gross Unrealized Losses | (1,221) | (2,138)
Securities available-for-sale, at fair value | 24,931 | 39,435
Fair Value, post ASU 2019-04 | 24,931 | 39,435
Mortgage-backed securities (GSEs) |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total, post ASU 2019-04 | 413,054 | 330,839
Gross Unrealized Gains | 2,973 | 515
Gross Unrealized Losses | (13,089) | (21,565)
Securities available-for-sale, at fair value | 402,938 | 309,789
Fair Value, post ASU 2019-04 | $ 402,938 | $ 309,789

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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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