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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Future Minimum Rentals on Operating Leases      
2016 $ 8,229    
2017 8,229    
2018 8,186    
2019 8,186    
2020 8,186    
Thereafter 35,588    
Total minimum rental payments 76,604    
Commitments and Contingencies (Textual)      
Rental expense for operating leases $ 7,000 $ 1,300 $ 1,500