Property, Plant and Equipment (Detail) - Property, Plant and Equipment (Tables) (USD $) In Thousands, unless otherwise specified	Sep. 29, 2012	Dec. 31, 2011
Property, plant and equipment, at cost	$ 46,567	$ 44,457
Less accumulated depreciation	26,641	26,867
Property, plant and equipment, net	19,926	17,590
Land and Building [Member]
Property, plant and equipment, at cost	13,896	13,896
Machinery and Equipment [Member]
Property, plant and equipment, at cost	30,340	27,277
Office Furniture and Equipment [Member]
Property, plant and equipment, at cost	1,168	1,168
Construction in Progress [Member]
Property, plant and equipment, at cost	$ 1,163	$ 2,116

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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