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Securities Securities (Available for sale securities in continuous unrealized loss position) (Details) $ in Thousands | Jun. 30, 2025 USD ($) holding | Dec. 31, 2024 USD ($) holding
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Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 148 | 160
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 47,100 | $ 128,499
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (944) | (2,874)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 1,035,398 | 1,119,582
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (70,313) | (100,172)
Debt Securities, Available-for-sale, Unrealized Loss Position | 1,082,498 | 1,248,081
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ 71,257 | $ 103,046
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 107 | 117
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 45,806 | $ 127,152
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (940) | (2,867)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 248,583 | 249,098
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (26,372) | (34,915)
Debt Securities, Available-for-sale, Unrealized Loss Position | 294,389 | 376,250
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ 27,312 | $ 37,782
Collateralized Debt Obligations [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 11 | 11
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 1,097 | $ 1,153
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (3) | (4)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 25,253 | 26,890
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (1,610) | (2,170)
Debt Securities, Available-for-sale, Unrealized Loss Position | 26,350 | 28,043
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ 1,613 | $ 2,174
US States and Political Subdivisions Debt Securities [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 1 | 1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 197 | $ 194
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (1) | (3)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 0 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 | 0
Debt Securities, Available-for-sale, Unrealized Loss Position | 197 | 194
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ 1 | $ 3
Pooled trust preferred securities issued by banks and insurers |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 1 | 1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 0 | $ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 1,038 | 1,095
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (82) | (85)
Debt Securities, Available-for-sale, Unrealized Loss Position | 1,038 | 1,095
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ 82 | $ 85
Small Business Administration Pooled Securities [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 8 | 8
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 0 | $ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 39,551 | 40,838
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (5,644) | (7,194)
Debt Securities, Available-for-sale, Unrealized Loss Position | 39,551 | 40,838
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ 5,644 | $ 7,194
U.S. government agency securities |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 9 | 9
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 0 | $ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 215,270 | 209,660
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (13,808) | (19,792)
Debt Securities, Available-for-sale, Unrealized Loss Position | 215,270 | 209,660
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ 13,808 | $ 19,792
US Treasury Securities [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 11 | 13
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 0 | $ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 505,703 | 592,001
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (22,797) | (36,016)
Debt Securities, Available-for-sale, Unrealized Loss Position | 505,703 | 592,001
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ 22,797 | $ 36,016

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