CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Statement of Stockholders' Equity [Abstract]
Issuance of common stock under employee stock purchase plan (in shares)	48	53	74
Exercise of stock options (in shares)	1,066	1,444	1,550
Exercise of restricted stock units (in shares)	180	68	90
Repurchase of common stock (in shares)	3,055	3,076	826