Securities (Securities in a Continuous Unrealized Loss Position) (Details) $ in Thousands	Sep. 30, 2025 USD ($) security	Dec. 31, 2024 USD ($) security
Debt Securities, Available-for-sale [Line Items]
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, number of securities | security	6	59
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 5,319	$ 399,453
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ (11)	$ (3,644)
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities | security	102	106
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 501,927	$ 511,955
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (104,620)	$ (129,665)
Available for sale debt securities, securities in continuous unrealized loss position, number of securities | security	108	165
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 507,246	$ 911,408
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (104,631)	$ (133,309)
Obligations of U.S. government agencies and U.S. government-sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, number of securities | security	3	2
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 1,029	$ 15,289
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ (6)	$ (12)
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities | security	5	6
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 23,985	$ 23,323
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (1,966)	$ (3,127)
Available for sale debt securities, securities in continuous unrealized loss position, number of securities | security	8	8
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 25,014	$ 38,612
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (1,972)	$ (3,139)
Mortgage-backed securities issued by U.S. government-sponsored agencies and U.S. government-sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, number of securities | security	3	57
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 4,290	$ 384,164
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ (5)	$ (3,632)
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities | security	91	93
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 459,157	$ 466,741
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (102,049)	$ (125,819)
Available for sale debt securities, securities in continuous unrealized loss position, number of securities | security	94	150
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 463,447	$ 850,905
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (102,054)	$ (129,451)
Individual name issuer trust preferred debt securities
Debt Securities, Available-for-sale [Line Items]
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, number of securities | security	0	0
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 0	$ 0
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ 0	$ 0
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities | security	2	3
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 6,090	$ 9,221
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (94)	$ (193)
Available for sale debt securities, securities in continuous unrealized loss position, number of securities | security	2	3
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 6,090	$ 9,221
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (94)	$ (193)
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, number of securities | security	0	0
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 0	$ 0
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ 0	$ 0
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities | security	4	4
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 12,695	$ 12,670
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (511)	$ (526)
Available for sale debt securities, securities in continuous unrealized loss position, number of securities | security	4	4
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 12,695	$ 12,670
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (511)	$ (526)