Supplemental Financial Statement Information - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Supplemental Income Statement Elements [Abstract]
Depreciation expense	$ 60,600,000	$ 48,800,000	$ 55,200,000
Interest capitalized	$ 0	$ 0	$ 0