Property, Plant and Equipment - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Property, plant and equipment acquired	$ 66,000,000	$ 14,000,000
Impairment charges	5,200,000	0	$ 0
Depreciation expense	$ 38,600,000	$ 28,900,000	$ 24,700,000