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Servicing Rights (Fair Value of Servicing Assets) (Details) - Term Loan - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Servicing Asset at Fair Value, Amount [Roll Forward]    
Fair value at the beginning of period $ 154 $ 1,131
Addition:    
Servicing resulting from transfers of financial assets 140 1,120
Changes in fair value:    
Other changes in fair value (290) (2,097)
Fair value at the end of period (Level 3) $ 4 $ 154