Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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+ Details

Net Income Per Share (Details Textual) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Stock Options [Member]
Earning per share dilutive effect (Textual) [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount	0.9	0.1	0.9	0.1
Restricted stock units [Member]
Earning per share dilutive effect (Textual) [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount	0.2		0.2
Performance-based restricted stock units [Member]
Earning per share dilutive effect (Textual) [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount	0.4	0.3	0.4	0.3