Securities (Securities in a Continuous Unrealized Loss Position) (Details) $ in Thousands	Mar. 31, 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	7	9
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 10,769	$ 63,711
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ (43)	$ (438)
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities | security	189	181
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 948,015	$ 914,700
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (167,112)	$ (152,072)
Available for sale debt securities, securities in continuous unrealized loss position, number of securities | security	196	190
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 958,784	$ 978,411
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (167,155)	$ (152,510)
Obligations of U.S. government-sponsored enterprises [Member]
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	$ 9,959	$ 19,824
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ (41)	$ (176)
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities | security	21	20
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 213,951	$ 195,903
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (26,499)	$ (24,547)
Available for sale debt securities, securities in continuous unrealized loss position, number of securities | security	22	21
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 223,910	$ 215,727
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (26,540)	$ (24,723)
Mortgage-backed securities issued by U.S. government-sponsored agencies and U.S. government-sponsored enterprises [Member]
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	8
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 810	$ 43,887
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ (2)	$ (262)
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities | security	161	154
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 712,684	$ 698,115
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (139,403)	$ (125,625)
Available for sale debt securities, securities in continuous unrealized loss position, number of securities | security	167	162
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 713,494	$ 742,002
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (139,405)	$ (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	$ 8,975	$ 8,793
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (429)	$ (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	$ 8,975	$ 8,793
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (429)	$ (607)
Corporate bonds [Member]
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	$ 12,405	$ 11,889
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ (781)	$ (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	$ 12,405	$ 11,889
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ (781)	$ (1,293)