Inventories (Details) - USD ($) $ in Thousands	Sep. 26, 2015	Dec. 27, 2014
Inventory Disclosure [Abstract]
Raw materials	$ 40,983	$ 40,649
Work-in-process	23,346	19,976
Finished goods	61,488	57,913
Supplies and other	236	126
LIFO reserve	(11,197)	(14,457)
Inventories	$ 114,856	$ 104,207

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount of difference between inventory at lower of LIFO cost or market and inventory at lower of other inventory accounting method cost or market, for example, but not limited to, FIFO or average cost.

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of other supplies used within the manufacturing or production process expected to be consumed within one year or operating cycle, if longer.

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-Publisher FASB

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-Glossary Inventory

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