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Securities - Fair Value of Debt Security, Available-for-sale and Held-to-maturity (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | $ 558,943 | $ 584,239
Gross unrealized gains, available for sale | 59 | 14
Gross unrealized losses, available for sale | (61,450) | (69,655)
Fair value, available for sale | 497,552 | 514,598
Amortized cost, held to maturity | 391,954 | 407,959
Gross unrealized gains, held to maturity | 42 | 35
Gross unrealized losses, held to maturity | (46,096) | (59,203)
Fair value, held to maturity | 345,900 | 348,791
U.S. Treasury Notes and Bonds [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | 89,994 | 90,345
Gross unrealized gains, available for sale | 0 | 0
Gross unrealized losses, available for sale | (7,762) | (10,151)
Fair value, available for sale | 82,232 | 80,194
U.S. Government and Federal Agency [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, held to maturity | 2,977 | 2,972
Gross unrealized gains, held to maturity | 0 | 0
Gross unrealized losses, held to maturity | (220) | (293)
Fair value, held to maturity | 2,757 | 2,679
State and Municipal [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | 269,780 | 269,918
Gross unrealized gains, available for sale | 0 | 0
Gross unrealized losses, available for sale | (34,746) | (35,236)
Fair value, available for sale | 235,034 | 234,682
Amortized cost, held to maturity | 196,165 | 196,098
Gross unrealized gains, held to maturity | 10 | 14
Gross unrealized losses, held to maturity | (25,013) | (30,220)
Fair value, held to maturity | 171,162 | 165,892
Mortgage-backed [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | 189,408 | 212,392
Gross unrealized gains, available for sale | 59 | 14
Gross unrealized losses, available for sale | (18,708) | (23,905)
Fair value, available for sale | 170,759 | 188,501
Amortized cost, held to maturity | 172,476 | 188,329
Gross unrealized gains, held to maturity | 0 | 0
Gross unrealized losses, held to maturity | (18,644) | (25,796)
Fair value, held to maturity | 153,832 | 162,533
Corporate [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | 250 | 250
Gross unrealized gains, available for sale | 0 | 0
Gross unrealized losses, available for sale | (37) | (46)
Fair value, available for sale | 213 | 204
Amortized cost, held to maturity | 20,036 | 20,013
Gross unrealized gains, held to maturity | 32 | 21
Gross unrealized losses, held to maturity | (2,212) | (2,864)
Fair value, held to maturity | 17,856 | 17,170
Asset-backed Securities [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | 9,511 | 11,334
Gross unrealized gains, available for sale | 0 | 0
Gross unrealized losses, available for sale | (197) | (317)
Fair value, available for sale | 9,314 | 11,017
Amortized cost, held to maturity | 300 | 547
Gross unrealized gains, held to maturity | 0 | 0
Gross unrealized losses, held to maturity | (7) | (30)
Fair value, held to maturity | $ 293 | $ 517

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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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