Inventories - Schedule Of Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Inventory Disclosure [Abstract]
Finished products	$ 67,713	$ 74,466
Work in process	8,942	8,108
Raw materials and supplies	46,299	54,263
Total inventories	122,954us-gaap_InventoryNet	136,837us-gaap_InventoryNet
Excess of FIFO costs over LIFO costs	44,468	44,670
Total FIFO inventories	$ 167,422us-gaap_FIFOInventoryAmount	$ 181,507us-gaap_FIFOInventoryAmount

The excess of replacement or current cost over the stated LIFO (last in first out) inventory value when the LIFO inventory method is utilized.

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The amount of FIFO (first in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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