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Accrued Interest and Other Assets (Narratives) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Other assets [Line Items]    
Other prepaid expenses $ 17,096 $ 11,762
Prepaid Taxes 12,500 7,000
Other Intangible Assets 4,300 5,300
Other repossessed assets 3,224 6,226
Repossessed auto 3,000 5,500
Mortgage tax credits 6,277 6,277
Customer Relationships [Member]    
Other assets [Line Items]    
Other Intangible Assets $ 1,900 $ 2,500