Securities Securities (Available for sale securities in continuous unrealized loss position) (Details) $ in Thousands	Jun. 30, 2026 USD ($) holding	Dec. 31, 2025 USD ($) holding
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions \| holding	416	196
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,039,011	$ 361,326
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(23,285)	(4,157)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(877,351)	(983,248)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	49,026	51,720
Debt Securities, Available-for-sale, Unrealized Loss Position	1,916,362	1,344,574
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 72,311	$ 55,877
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	129	106
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 637,880	$ 178,837
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(13,484)	(911)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(228,825)	(237,923)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	21,715	21,320
Debt Securities, Available-for-sale, Unrealized Loss Position	866,705	416,760
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 35,199	$ 22,231
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	86	54
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 224,470	$ 175,697
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(8,530)	(3,216)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(21,257)	(23,265)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	1,405	1,313
Debt Securities, Available-for-sale, Unrealized Loss Position	245,727	198,962
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 9,935	$ 4,529
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	174	8
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 170,097	$ 6,792
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,212)	(30)
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	170,097	6,792
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 1,212	$ 30
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	(966)	(1,042)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	69	78
Debt Securities, Available-for-sale, Unrealized Loss Position	966	1,042
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 69	$ 78
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	(34,904)	(37,832)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	4,842	4,648
Debt Securities, Available-for-sale, Unrealized Loss Position	34,904	37,832
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 4,842	$ 4,648
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	(218,788)	(218,672)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	9,529	10,025
Debt Securities, Available-for-sale, Unrealized Loss Position	218,788	218,672
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 9,529	$ 10,025
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	9	10
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 6,564	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(59)	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(372,611)	(464,514)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	11,466	14,336
Debt Securities, Available-for-sale, Unrealized Loss Position	379,175	464,514
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 11,525	$ 14,336

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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