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Securities - Schedule of Amortized Cost and Estimated Fair Value of Available-for-Sale Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Amortized Cost |  |
Due in one year or less | $ 62,719 | $ 74,224
Due after one year through five years | 229,088 | 238,913
Due after five years through ten years | 185,661 | 180,500
Total | 477,468 | 493,637
Mortgage-backed securities | 930,302 | 897,742
Amortized Cost | 1,407,770 | 1,391,379
Fair Value |  |
Due in one year or less | 62,637 | 74,109
Due after one year through five years | 220,345 | 231,336
Due after five years through ten years | 178,361 | 175,495
Total | 461,343 | 480,940
Mortgage-backed securities | 927,567 | 901,128
Fair Value | $ 1,388,910 | $ 1,382,068

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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 + Details
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