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Leases - Summary Operating Lease Future Minimum Payments (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Disclosure Leases Summary Operating Lease Future Minimum Payments [Abstract]  
2016 $ 12,694
2017 10,891
2018 9,313
2019 6,437
2020 4,930
Thereafter $ 23,329