Schedule Of Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Finished products	$ 74,466	$ 72,658
Work in process	8,108	13,473
Raw materials and supplies	54,263	50,169
Total inventories	136,837	136,300
Excess of FIFO costs over LIFO costs	44,670	46,519
Total FIFO inventories	$ 181,507	$ 182,819