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Segment Reporting (Business Segments Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Segment Reporting Information [Line Items]      
Goodwill $ 66,062 $ 65,840 $ 66,417
Other intangible assets, net 10,111 8,863  
Total assets 4,311,698 4,105,210  
Banking [Member]      
Segment Reporting Information [Line Items]      
Goodwill 48,536 48,536  
Other intangible assets, net 213 373  
Total assets 4,272,439 4,069,086  
Non-Banking [Member]      
Segment Reporting Information [Line Items]      
Goodwill 17,526 17,304 $ 17,881
Other intangible assets, net 9,898 8,490  
Total assets 35,975 31,466  
Holding Company and Other [Member]      
Segment Reporting Information [Line Items]      
Total assets $ 3,284 $ 4,658