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Stockholders' Equity (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Apr. 01, 2012	Apr. 03, 2011	Oct. 21, 2008
Stockholders' Equity Note [Abstract]
Shares authorized for repurchase by Board of Directors (in shares)			6,000,000
Common stock repurchased to facilitate tax withholding for RSUs (in shares)	16,000	24,000
Common stock repurchased to facilitate tax withholding for RSUs, value	$ 596	$ 899

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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