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Leases - Rental Payments Under Operating Lease (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]  
2016 $ 5,169
2017 2,727
2018 1,166
2019 434
2020 244
Thereafter 0
Total $ 9,740