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Leases - Future Minimum Rental Commitments Under Non-Cancelable Operating Leases (Detail)
$ in Millions
Dec. 31, 2015
USD ($)
Leases [Abstract]  
2016 $ 1.6
2017 1.3
2018 0.9
2019 0.8
2020 0.9
Thereafter 1.4
Total minimum payments required $ 6.9