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Commitments (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]    
Remaining 2017 $ 5,232  
2017 4,568  
2018 2,376  
2019 702  
2020 349  
2021 and thereafter 369  
Operating Leases, Future Minimum Payments Due 13,596  
Operating Leases, Rent Expense $ 2,000 $ 2,400