Stock-Based Awards - Other Information (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 25, 2011 Years	Dec. 26, 2010	Dec. 27, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum issuance of shares authorized for directors	500,000
Annual stock option grant to directors	4,000
Stock-based compensation expense	$ 8,500	$ 8,400	$ 20,400
Pool of excess tax benefits	22,000
Maximum payout of long term incentive plan	175.00%
Minimum payout of long term incentive plan	0.00%
Percentage of payout based on total shareholder return	50.00%
Payments under long term incentive plan based on total shareholder return during year	4,000	7,000
Unrecognized compensation expense releted to the unvested portion of our stock-based awards	$ 4,000
Weighted average years to be recognized over	1.4
Shares, outstanding	18,166,000	21,769,000
Shares, available for issuance	17,019,000	19,884,000
Class B Common Stock available for conversion into Class A Common Stock	819,000	819,000
Stock-Based Compensation Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, available for issuance	6,771,000	8,252,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, available for issuance	6,410,000	7,013,000
Defined Contribution Benefit Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, available for issuance	3,838,000	4,619,000