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Commitments and Contingencies - Commitment for Minimum Rental Payment (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Contractual Obligation, Fiscal Year Maturity Schedule  
2016 $ 5,591
2017 4,876
2018 2,726
2019 1,774
2020 1,456
Thereafter 1,881
Total $ 18,304