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Investment Securities (Schedule Of Investment Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 1,893,453	$ 1,727,363
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	100	36,291
Securities Available-for-Sale, Gross Unrealized Holding Losses	151,430	9,514
Debt Securities, Available-for-sale	1,742,123	1,754,140
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	424,193	366,933
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	100	22,682
Securities Available-for-Sale, Gross Unrealized Holding Losses	30,375	24
Debt Securities, Available-for-sale	393,918	389,591
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	877,435	849,114
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		13,437
Securities Available-for-Sale, Gross Unrealized Holding Losses	92,572	8,088
Debt Securities, Available-for-sale	784,863	854,463
Corporate Debt Securities
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	17,250	11,250
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		169
Securities Available-for-Sale, Gross Unrealized Holding Losses	1,088	7
Debt Securities, Available-for-sale	16,162	11,412
Collateralized Loan Obligations
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	535,575	500,066
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		3
Securities Available-for-Sale, Gross Unrealized Holding Losses	26,517	1,395
Debt Securities, Available-for-sale	509,058	$ 498,674
US Government Corporations and Agencies Securities
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	39,000
Securities Available-for-Sale, Gross Unrealized Holding Losses	878
Debt Securities, Available-for-sale	$ 38,122

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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