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Commitments and Contingencies - Schedule of Future Minimum Annual Commitments Under Operating Leases (Detail)
$ in Thousands
Dec. 31, 2016
USD ($)
Commitments And Contingencies Disclosure [Abstract]  
2017 $ 6,576
2018 5,173
2019 4,052
2020 3,038
2021 2,247
Thereafter $ 338