Supplemental Balance Sheet Information (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Inventories
Raw materials and supplies	$ 219,487	$ 223,482
Work-in-process	47,707	37,748
Finished goods	182,669	144,126
Total inventories	449,863	405,356
Property, plant and equipment
Land and land improvements	41,111	36,484
Buildings and leasehold improvements	244,246	212,168
Machinery and equipment	692,930	598,554
Construction in progress	40,251	33,841
Total property, plant and equipment	1,018,538	881,047
Less accumulated depreciation and amortization	631,013	551,612
Property, plant and equipment, net	$ 387,525	$ 329,435	$ 333,688