Balance Sheet Information - Summary of Inventory is Stated at Lower of Standard or Market Cost (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 28, 2014	Dec. 27, 2013
Inventory Disclosure [Abstract]
Raw materials	$ 47,298	$ 49,515
Work in process	21,561	19,437
Finished goods	5,167	1,815
Ending Inventory	74,026	70,767
Reserve for excess and obsolete	(6,565)	(6,825)
Total	$ 67,461	$ 63,942

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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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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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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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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 of valuation reserve for inventory.

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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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