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Securities - Securities Sold (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2025 | Jun. 30, 2024
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value Immediately Prior to Sale | $ 686,485 | $ 686,485 | $ 196,537
Net Proceeds | 686,485 | 686,485 | 177,185
Gain/(Loss) | 0 | 0 | (19,352)
Obligations of other U.S. Government agencies and corporations |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value Immediately Prior to Sale | 34,394 | 34,394 |
Net Proceeds | 34,394 | 34,394 |
Gain/(Loss) | 0 | 0 |
Obligations of states and political subdivisions |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value Immediately Prior to Sale | 327,509 | 327,509 | 12,301
Net Proceeds | 327,509 | 327,509 | 11,360
Gain/(Loss) | 0 | 0 | (941)
Residential mortgage backed securities: | Government agency mortgage backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value Immediately Prior to Sale | 275,910 | 275,910 | 107,389
Net Proceeds | 275,910 | 275,910 | 95,922
Gain/(Loss) | 0 | 0 | (11,467)
Residential mortgage backed securities: | Government agency collateralized mortgage obligations |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value Immediately Prior to Sale | 2,437 | 2,437 | 48,300
Net Proceeds | 2,437 | 2,437 | 43,990
Gain/(Loss) | 0 | 0 | (4,310)
Commercial mortgage backed securities: | Government agency mortgage backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value Immediately Prior to Sale | 6,541 | 6,541 |
Net Proceeds | 6,541 | 6,541 |
Gain/(Loss) | 0 | 0 |
Commercial mortgage backed securities: | Government agency collateralized mortgage obligations |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value Immediately Prior to Sale | 6,480 | 6,480 | 28,547
Net Proceeds | 6,480 | 6,480 | 25,913
Gain/(Loss) | 0 | 0 | $ (2,634)
Other debt securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value Immediately Prior to Sale | 33,214 | 33,214 |
Net Proceeds | 33,214 | 33,214 |
Gain/(Loss) | $ 0 | $ 0 |

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- Definition Amount of realized gain (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/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 + Details
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