Activity in Recorded Environmental Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Commitments and Contingencies Disclosure [Line Items]
Balance at beginning of period	$ 20,322
Expenditures	(258)
Changes in estimates recorded to earnings and other	50
Foreign currency translation	(929)
Balance at end of period	19,185
Less amounts reported in Accrued expenses	9,715
Amounts reported in Other noncurrent liabilities	$ 9,470