Securities (Securities in a Continuous Unrealized Loss Position) (Details) $ in Thousands	Sep. 30, 2024 USD ($) security	Dec. 31, 2023 USD ($) 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	1	9
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 20,000	$ 63,711
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ (1)	$ (438)
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities | security	175	181
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 872,265	$ 914,700
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (125,928)	$ (152,072)
Available for sale debt securities, securities in continuous unrealized loss position, number of securities | security	176	190
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 892,265	$ 978,411
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (125,929)	$ (152,510)
Obligations of 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	1	1
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 20,000	$ 19,824
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ (1)	$ (176)
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities | security	18	20
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 191,487	$ 195,903
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (18,462)	$ (24,547)
Available for sale debt securities, securities in continuous unrealized loss position, number of securities | security	19	21
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 211,487	$ 215,727
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (18,463)	$ (24,723)
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	0	8
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 0	$ 43,887
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ 0	$ (262)
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities | security	150	154
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 659,027	$ 698,115
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (106,614)	$ (125,625)
Available for sale debt securities, securities in continuous unrealized loss position, number of securities | security	150	162
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 659,027	$ 742,002
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (106,614)	$ (125,887)
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	3	3
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 9,193	$ 8,793
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (217)	$ (607)
Available for sale debt securities, securities in continuous unrealized loss position, number of securities | security	3	3
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 9,193	$ 8,793
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (217)	$ (607)
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	$ 12,558	$ 11,889
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (635)	$ (1,293)
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	$ 12,558	$ 11,889
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (635)	$ (1,293)