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Segment Reporting (Business Segment Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Goodwill	$ 67,071	$ 66,062
Other intangible assets, net	7,588	7,727
Total assets	5,623,193	4,912,306
Banking [Member]
Segment Reporting Information [Line Items]
Goodwill	48,536	48,536
All Other [Member]
Segment Reporting Information [Line Items]
Goodwill	18,535	17,526
Operating Segment [Member] | Banking [Member]
Segment Reporting Information [Line Items]
Goodwill	48,536	48,536
Other intangible assets, net	6	28
Total assets	5,583,776	4,875,673
Operating Segment [Member] | All Other [Member]
Segment Reporting Information [Line Items]
Goodwill	18,535	17,526
Other intangible assets, net	7,582	7,699
Total assets	$ 39,417	$ 36,633

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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