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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Statement of Stockholders' Equity [Abstract]      
Issuance of common stock under employee stock purchase plan (in shares) 87 96 107
Exercise of stock options (in shares) 2,681 2,133 2,888
Exercise of restricted stock units (in shares) 166 360 136
Repurchase of common stock (in shares) 2,287 6,112 6,151