Property, Plant and Equipment, Net - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Abstract]
Capital lease assets	$ 7.6	$ 4.5
Accumulated depreciation on capital lease assets	2.7	0.5
Interest expense	$ 0.0	$ 0.6	$ 0.0