Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property Plant and Equipment Useful Life and Values [Abstract]
Depreciation	$ 30,462	$ 21,097	$ 16,885
Capitalized computer software amortization expense	11,600	9,200	$ 7,300
Unamortized computer software costs	$ 44,900	$ 33,000