Consolidated Statements of Stockholders' Equity (Parenthetical)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Consolidated Statements of Stockholders' Equity
Issuance of treasury stock, shares	350,000	15,384	22,220
Issuance of treasury stock, shares		350,000
Issuance of common stock (in shares)		41,672