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Commitments - Minimum Future Payments on Non-Cancelable Operating Leases (Details)
$ in Thousands
Sep. 30, 2015
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Remaining three months of 2015 $ 1,751
2016 6,526
2017 5,885
2018 5,490
2019 5,481
Thereafter 15,216
Total minimum future lease payments 40,349
Purchase obligation due within the next twelve months $ 28,800