Property, Plant and Equipment (Detail) - Property, Plant and Equipment (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 31, 2012
Property, plant and equipment, at cost	$ 44,975	$ 43,977
Less accumulated depreciation	24,552	24,107
Property, plant and equipment, net	20,423	19,870
Land and Building [Member]
Property, plant and equipment, at cost	13,896	13,896
Machinery and Equipment [Member]
Property, plant and equipment, at cost	28,406	28,406
Office Furniture and Equipment [Member]
Property, plant and equipment, at cost	1,153	1,153
Construction in Progress [Member]
Property, plant and equipment, at cost	$ 1,520	$ 522

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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