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Commitments and Contingencies Future Purchase Commitments (Details)
$ in Thousands
Jun. 30, 2016
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Remainder of 2016 $ 44,625
2017 18,259
2018 4,909
2019 1,491
2020 118
Thereafter 21
Unconditional purchase obligations $ 69,423