Securities Securities (Available for sale securities in continuous unrealized loss position) (Details) $ in Thousands	Mar. 31, 2025 USD ($) holding	Dec. 31, 2024 USD ($) holding
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions \| holding	157	160
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 78,746	$ 128,499
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,411)	(2,874)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,081,655	1,119,582
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(81,382)	(100,172)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,160,401	1,248,081
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 82,793	$ 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	115	117
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 77,425	$ 127,152
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,406)	(2,867)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	250,191	249,098
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(29,360)	(34,915)
Debt Securities, Available-for-sale, Unrealized Loss Position	327,616	376,250
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 30,766	$ 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	$ 1,126	$ 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	26,236	26,890
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,768)	(2,170)
Debt Securities, Available-for-sale, Unrealized Loss Position	27,362	28,043
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 1,771	$ 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	$ 195	$ 194
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(2)	(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	195	194
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 2	$ 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	1,095	1,095
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(85)	(85)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,095	1,095
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 85	$ 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	40,717	40,838
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(6,060)	(7,194)
Debt Securities, Available-for-sale, Unrealized Loss Position	40,717	40,838
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 6,060	$ 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	213,267	209,660
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(15,997)	(19,792)
Debt Securities, Available-for-sale, Unrealized Loss Position	213,267	209,660
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 15,997	$ 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	12	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	550,149	592,001
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(28,112)	(36,016)
Debt Securities, Available-for-sale, Unrealized Loss Position	550,149	592,001
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 28,112	$ 36,016

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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