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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Commitments and Contingencies [Abstract]      
Total rental expenses $ 980 $ 1,048 $ 1,194
Future minimum payments under non-cancelable operating leases [Abstract]      
2016 771    
2017 804    
2018 708    
2019 601    
2020 616    
Thereafter 2,749    
Future minimum payments, Total 6,249    
Maturities of Time Deposits [Abstract]      
2016 70,605    
2017 9,235    
2018 3,468    
2019 3,908    
2020 184    
Thereafter 408    
Time deposits, Total $ 87,808