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Commitments, Contingencies, and Credit Risk - Receivables (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]    
Standby Letters of Credit $ 1,970 $ 2,025
Variable Rate Commitments 120,173 87,818
Fixed Rate Commitments 29,681 25,424
Total Commitments $ 151,824 $ 115,267
Range of Rates on Fixed Rate Commitments, Minimum 2.60% 2.00%
Range of Rates on Fixed Rate Commitments, Maximum 18.00% 18.00%