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Goodwill and Other Intangible Assets - Additional Information (Detail)
$ in Millions
12 Months Ended
Dec. 31, 2015
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2016 $ 2.5
2017 0.8
2018 0.6
2019 0.5
2020 0.4
Thereafter $ 1.3
Weighted average estimated remaining amortization period 5 years 7 months 6 days