Securities (Securities in a Continuous Unrealized Loss Position) (Details) $ in Thousands	Mar. 31, 2022 USD ($) security	Dec. 31, 2021 USD ($) 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	90	53
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 575,502	$ 667,152
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ 39,973	$ 10,583
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities \| security	49	34
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 350,279	$ 173,628
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ 34,966	$ 5,220
Available for sale debt securities, securities in continuous unrealized loss position, number of securities \| security	139	87
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 925,781	$ 840,780
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ 74,939	$ 15,803
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	10	12
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 89,928	$ 152,733
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ 6,378	$ 3,313
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities \| security	10	6
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 95,504	$ 43,202
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ 9,396	$ 1,198
Available for sale debt securities, securities in continuous unrealized loss position, number of securities \| security	20	18
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 185,432	$ 195,935
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ 15,774	$ 4,511
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	80	41
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, fair value	$ 485,574	$ 514,419
Available for sale debt securities, securities in continuous unrealized loss position, less than 12 months, unrealized losses	$ 33,595	$ 7,270
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, number of securities \| security	32	21
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, fair value	$ 233,593	$ 108,983
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ 24,216	$ 2,937
Available for sale debt securities, securities in continuous unrealized loss position, number of securities \| security	112	62
Available for sale debt securities, securities in continuous unrealized loss position, fair value	$ 719,167	$ 623,402
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ 57,811	$ 10,207
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	$ 9,019	$ 9,138
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ 358	$ 235
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	$ 9,019	$ 9,138
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ 358	$ 235
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	$ 12,163	$ 12,305
Available for sale debt securities, securities in continuous unrealized loss position, greater than 12 months, unrealized losses	$ 996	$ 850
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	$ 12,163	$ 12,305
Available for sale debt securities, securities in continuous unrealized loss position, unrealized losses	$ 996	$ 850

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.

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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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