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Lease Commitments (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Leases [Abstract]      
Rental expense, operating leases $ 1,215 $ 753 $ 652
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]      
2017 951    
2018 666    
2019 614    
2020 538    
2021 495    
Thereafter 2,916    
Total $ 6,180