Property, Plant and Equipment - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 22,707,000	$ 21,239,000	$ 21,405,000
Capitalized computer software development costs	2,242,000	0
Capitalized software development amortization expense	$ 336,000	$ 0