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Commitments (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]    
Remaining 2016 $ 5,785  
2017 6,040  
2018 3,274  
2019 1,180  
2020 180  
2021 and thereafter 479  
Operating Leases, Future Minimum Payments Due 16,938  
Operating Leases, Rent Expense $ 2,400 $ 2,300