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Share Repurchases	12 Months Ended
	Dec. 28, 2011
Share Repurchase [Abstract]
Share Repurchases	Note 17.     Share Repurchases Our credit facility permits the payment of cash dividends and the purchase of Denny's Corporation Common Stock subject to certain limitations. In November 2010, the Board of Directors approved a share repurchase program authorizing us to repurchase up to 3.0 million shares of our Common Stock. Under the program, we could, from time to time, purchase shares through December 31, 2011 in the open market (including pre-arranged stock trading plans in accordance with guidelines specified in Rule 10b5-1 under the Securities Exchange Act of 1934) or in privately negotiated transactions, subject to market and business conditions. We repurchased 2.0 million and 1.0 million shares of our Common Stock during 2011 and 2010, respectively, for a total of $11.5 million under this share repurchase program, thus completing the program. In April 2011, our Board of Directors approved a share repurchase program with similar terms as the 2010 program, authorizing us to repurchase up to an additional 6.0 million shares of our Common Stock. As of December 28, 2011, we had repurchased 3.7 million shares of Common Stock for $14.0 million under this share repurchase program. Repurchased shares are included as treasury stock in the Consolidated Balance Sheets and the Consolidated Statements of Shareholders' Deficit and Comprehensive Loss.

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The entire disclosure for an entity's treasury stock, including the average cost per share, carrying basis for each class of treasury stock, description of share repurchase program authorized by an entity's board of directors, the number of shares repurchased, the cost of the shares repurchased, the remaining maximum dollar value of shares available for repurchase under the program, the treatment of the purchase price in excess of the current market value, number of shares held for each class of treasury stock, and other information necessary to a fair presentation.

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