Restructuring And Other Impairment Charges (Narrative) (Details) (USD $)	3 Months Ended
Apr. 01, 2012	Mar. 27, 2011
Restructuring Cost and Reserve [Line Items]
Number of facilities under restructuring program	4
Asset impairment charges	$ 0	$ 0
Facility closure costs	900,000
2012 restructuring charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	605,000
Other restructuring costs	500,000
Contract Termination Costs [Member] \| 2012 restructuring charges [Member]
Restructuring Cost and Reserve [Line Items]
Facility closure costs	2,700,000
Facilities Consolidation [Member] \| 2012 restructuring charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	500,000
Termination benefits	300,000
Facility closure costs	200,000
Termination of European Distributor Agreements [Member] \| 2012 restructuring charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 600,000

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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The charge against earnings in the period, comprised of costs incurred associated with an exit or disposal activity other than for a discontinued operations as defined under generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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- Definition

The charge against earnings in the period, comprised of costs associated with restructuring activities not otherwise specified in the taxonomy pursuant to a duly authorized plan, excluding a discontinued operation as defined by generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, but excludes costs associated with the retirement of a long-lived asset and severance costs associated with established compensation plans.

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- Definition

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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- Definition

The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits.

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

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