Activity in Recorded Environmental Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Jun. 30, 2012	Sep. 30, 2012
Commitments and Contingencies Disclosure [Line Items]
Beginning balance at beginning of period		$ 12,359
Expenditures		(962)
Changes in estimates recorded to earnings and other		177
Exit of phosphorous flame retardants business	8,700	8,700
Foreign currency translation		207
Ending balance at end of period		20,481
Less amounts reported in Accrued expenses		3,080
Amounts reported in Other noncurrent liabilities		$ 17,401