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Portfolio Loans - Summary of Past Due and Impaired Loans (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Receivables [Abstract]        
Total interest income that would have been recognized under original terms $ 329 $ 229 $ 477 $ 544
Total cash received and recognized as interest income on non-accrual loans 44 98 50 125
Total interest income recognized on impaired loans $ 25 $ 14 $ 31 $ 27