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Securities - Amortized cost to fair value (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Amortized cost and estimated fair values of securities classified as Available-for-Sale |  |
Amortized Cost | $ 235,900 | $ 238,159
Unrealized gain | 1,010 | 425
Unrealized loss | (5,887) | (10,379)
Allowance for credit losses | 0 | 0
Fair Value | 231,023 | 228,205
U.S. Treasury securities |  |
Amortized cost and estimated fair values of securities classified as Available-for-Sale |  |
Amortized Cost | 68,838 | 69,469
Unrealized gain | 338 | 104
Unrealized loss | (153) | (489)
Allowance for credit losses | 0 | 0
Fair Value | 69,023 | 69,084
U.S. Government agencies |  |
Amortized cost and estimated fair values of securities classified as Available-for-Sale |  |
Amortized Cost | 11,149 | 9,005
Unrealized gain | 52 | 9
Unrealized loss | (1) | (7)
Allowance for credit losses | 0 | 0
Fair Value | 11,200 | 9,007
Agency mortgage-backed securities |  |
Amortized cost and estimated fair values of securities classified as Available-for-Sale |  |
Amortized Cost | 45,043 | 42,083
Unrealized gain | 124 |
Unrealized loss | (1,320) | (2,899)
Allowance for credit losses | 0 | 0
Fair Value | 43,847 | 39,184
Agency collateralized mortgage obligations |  |
Amortized cost and estimated fair values of securities classified as Available-for-Sale |  |
Amortized Cost | 10,833 | 10,993
Unrealized gain | 224 | 147
Unrealized loss | (107) | (307)
Allowance for credit losses | 0 | 0
Fair Value | 10,950 | 10,833
Corporate bonds |  |
Amortized cost and estimated fair values of securities classified as Available-for-Sale |  |
Amortized Cost | 86,465 | 90,219
Unrealized gain | 272 | 163
Unrealized loss | (4,093) | (6,337)
Allowance for credit losses | 0 | 0
Fair Value | 82,644 | 84,045
Municipal obligations |  |
Amortized cost and estimated fair values of securities classified as Available-for-Sale |  |
Amortized Cost | 6,595 | 10,092
Unrealized loss | (107) | (286)
Allowance for credit losses | 0 | 0
Fair Value | 6,488 | 9,806
SBA securities |  |
Amortized cost and estimated fair values of securities classified as Available-for-Sale |  |
Amortized Cost | 6,977 | 6,298
Unrealized gain |  | 2
Unrealized loss | (106) | (54)
Allowance for credit losses | 0 | 0
Fair Value | $ 6,871 | $ 6,246

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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 Amount excluding accrued interest, of allowance for credit loss 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 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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- Definition Amortized cost excluding accrued interest, before 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/2003/role/disclosureRef -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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