Share-Based Compensation (Details 2) (2009 and 2010 Executive LTIP [Member], USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
Jul. 01, 2011
2009 and 2010 Executive LTIP [Member]
Stock options earned under the Company's LTIP
Outstanding at January 1, 2011, Shares	569,065
Settled, Shares	491,842
Exercised, Shares	(41,436)
Expired or forfeited, Shares	(7,948)
Outstanding at July 1, 2011, Shares	1,011,523
Vested or expected to vest at July 1, 2011, Shares	951,218
Exercisable at July 1, 2011, Shares	148,239
Outstanding at Jan 1, 2011 , Weighted Average Exercise Price	$ 9.50
Settled, Weighted Average Exercise Price	$ 19.55
Exercised, Weighted Average Exercise Price	$ 9.79
Expired or forfeited, Weighted Average Exercise Price	$ 22.55
Outstanding at July 1, 2011, Weighted Average Exercise Price	$ 14.28
Vested or expected to vest at July 1, 2011, Weighted Average Exercise Price	$ 14.09
Exercisable at July 1, 2011, Weighted Average Exercise Price	$ 9.43
Outstanding at July 1, 2011, Weighted Average Remaining Contractual Term	8.2
Vested or expected to vest at July 1, 2011, Weighted Average Remaining Contractual Term	8.1
Exercisable at July 1, 2011, Weighted Average Remaining Contractual Term	7.7
Outstanding at July 1, 2011, Aggregate Intrinsic Value	$ 29,155
Vested or expected to vest at July 1, 2011, Aggregate Intrinsic Value	27,591
Exercisable at July 1, 2011, Aggregate Intrinsic Value	$ 4,991

Stock Options Earned Under Company LTIP Abstract.

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