Acquisitions - Deacon Industries, Inc. (Detail) - USD ($) $ in Thousands		9 Months Ended
	Oct. 01, 2015	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Purchase price, paid from available cash		$ 0	$ 97,732
Deacon
Business Acquisition [Line Items]
Purchase price, amount transferred	$ 12,600
Purchase price, funded from borrowings	11,000
Purchase price, paid from available cash	1,100
Contingent consideration liability recognized	500
Excess of purchase price over fair value of identifiable assets acquired	4,100
Fair value of property, plant and equipment acquired	900
Fair value of inventory acquired	500
Deacon | Customer Lists
Business Acquisition [Line Items]
Fair value of the assets acquired	$ 2,900
Assets acquired, amortization period	15 years
Deacon | Know How
Business Acquisition [Line Items]
Fair value of the assets acquired	$ 2,600
Assets acquired, amortization period	10 years
Deacon | Non-compete agreements
Business Acquisition [Line Items]
Fair value of the assets acquired	$ 100
Assets acquired, amortization period	5 years
Deacon | Trade Names and Trademarks
Business Acquisition [Line Items]
Fair value of the assets acquired	$ 1,100