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Other Intangible Assets (Schedule of Finite-Lived Intangible Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Gross Carrying Amount    
Total $ 23,908 $ 24,661
Accumulated Amortization    
Total (19,678) (19,706)
Net Carrying Amount    
Total 4,230 4,955
Core Deposits [Member]    
Gross Carrying Amount    
Total 23,908 23,908
Accumulated Amortization    
Total (19,678) (18,953)
Net Carrying Amount    
Total 4,230 4,955
Trust Relationship [Member]    
Gross Carrying Amount    
Total 0 753
Accumulated Amortization    
Total 0 (753)
Net Carrying Amount    
Total $ 0 $ 0