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Segment Reporting (Business Segment Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Segment Reporting Information [Line Items]      
Goodwill $ 60,402 $ 61,153 $ 48,536
Other intangible assets, net 6,544 7,486  
Assets 3,381,024 3,089,521  
Banking [Member]      
Segment Reporting Information [Line Items]      
Goodwill 48,536 48,536 $ 48,536
Other intangible assets, net 829 1,125  
Assets 3,356,987 3,065,109  
Insurance [Member]      
Segment Reporting Information [Line Items]      
Goodwill 11,866 12,617
Other intangible assets, net 5,715 6,361  
Assets 20,315 20,368  
Holding Company and Other [Member]      
Segment Reporting Information [Line Items]      
Assets $ 3,722 $ 4,044