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Future Minimum Payments Required under Operating Leases that have Initial or Remaining Non-cancellable Lease Terms in Excess of One Year (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Commitments And Contingencies Disclosure [Abstract]  
2016 $ 25,860
2017 30,615
2018 16,734
2019 14,004
2020 13,713
Thereafter $ 144,226