Securities (Securities in a Continuous Unrealized Loss Position) (Details) $ in Thousands	Mar. 31, 2023 USD ($) security	Dec. 31, 2022 USD ($) 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	48	99
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 229,990	$ 308,892
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ 6,090	$ 25,598
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities \| security	147	91
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 811,697	$ 661,065
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ 149,309	$ 147,084
Available for sale debt securities, securities in continuous unrealized loss position, number of securities \| security	195	190
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 1,041,687	$ 969,957
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ 155,399	$ 172,682
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	4	4
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 49,449	$ 20,115
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ 551	$ 638
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities \| security	19	18
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 173,215	$ 169,466
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ 27,737	$ 30,984
Available for sale debt securities, securities in continuous unrealized loss position, number of securities \| security	23	22
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 222,664	$ 189,581
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ 28,288	$ 31,622
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	44	95
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 180,541	$ 288,777
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ 5,539	$ 24,960
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities \| security	121	66
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 618,269	$ 471,355
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ 119,223	$ 113,788
Available for sale debt securities, securities in continuous unrealized loss position, number of securities \| security	165	161
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 798,810	$ 760,132
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ 124,762	$ 138,748
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	$ 8,700	$ 8,760
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ 690	$ 627
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	$ 8,700	$ 8,760
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ 690	$ 627
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	$ 11,513	$ 11,484
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ 1,659	$ 1,685
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	$ 11,513	$ 11,484
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ 1,659	$ 1,685

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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