Divestiture-Related Activities (Narrative) (Detail) (USD $)	1 Months Ended	3 Months Ended	6 Months Ended	1 Months Ended
	Dec. 02, 2011	Jul. 01, 2012	Jul. 01, 2012	Jul. 18, 2012 Subsequent Event [Member]	Mar. 22, 2011 Marine Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on disposal of an asset held for sale		$ 300,000	$ 300,000
Proceeds from sale of business	280,000,000			45,200,000	123,100,000
Retained liability expenses on divested business		1,200,000	200,000
Gain recognized on sale of discontinued operations	126,800,000				57,300,000
Working capital adjustment	16,800,000
Additional gain on sale of discontinued operations	2,200,000
Cash proceeds from sale of business					103,100,000
Cash included as part of net assets sold					1,500,000
Subordinated promissory note					4,500,000
Liabilities assumed					15,500,000
Accumulated loss realized from pension and postretirement obligations					8,400,000
Cumulative translation gains					33,400,000
Accumulated other comprehensive income					25,000,000
Net cash proceeds					$ 101,600,000