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Commitments and Financial Instruments with Off-Balance-Sheet Risk - Future Minimum Lease Payments - 10K (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Commitments and Financial Instruments with Off-Balance-Sheet Risk      
Rent expense - operating leases $ 1,410 $ 1,370 $ 1,250
Operating lease commitments      
2017 1,504    
2018 1,181    
2019 668    
2020 504    
2021 205    
Operating Leases, Future Minimum Payments Due, Total $ 4,062