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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Stock options exercised, tax benefit	$ 4,003	$ 2,737	$ 1,705
Net issuance of investment shares and restricted stock awards, tax benefit/deficit	1,343	277	65
Defined benefit plans liability adjustment, tax	$ 207	$ 48	$ 50

Tax effects of the increase (decrease) to accumulated comprehensive income during the period related to benefit plans. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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