Share-Based Compensation (Summary Of Stock Options Outstanding) (Details) (USD $)	9 Months Ended
	Sep. 24, 2011
$2.50 - $3.00 [Member]
Options Outstanding	11,171
Options Outstanding, Weighted Average Exercise Price	$ 2.50
Options Exercisable	11,171
Options Exercisable, Weighted Average Exercise Price	$ 2.50
Minimum Exercise Price	$ 2.50
Maximum Exercise Price	$ 3.00
$4.00 - $7.00 [Member]
Options Outstanding	1,095,759
Options Outstanding, Weighted Average Contractual Life (Years)	4.8
Options Outstanding, Weighted Average Exercise Price	$ 5.04
Options Exercisable	506,227
Options Exercisable, Weighted Average Exercise Price	$ 4.72
Minimum Exercise Price	$ 4.00
Maximum Exercise Price	$ 7.00
$10.00 - $16.00 [Member]
Options Outstanding	862,996
Options Outstanding, Weighted Average Contractual Life (Years)	5.5
Options Outstanding, Weighted Average Exercise Price	$ 14.15
Options Exercisable	264,317
Options Exercisable, Weighted Average Exercise Price	$ 14.51
Minimum Exercise Price	$ 10.00
Maximum Exercise Price	$ 16.00
$16.00 - $17.00 [Member]
Options Outstanding	861,200
Options Outstanding, Weighted Average Contractual Life (Years)	6.4
Options Outstanding, Weighted Average Exercise Price	$ 16.86
Minimum Exercise Price	$ 16.00
Maximum Exercise Price	$ 17.00
$18.00 - $19.00 [Member]
Options Outstanding	975,000
Options Outstanding, Weighted Average Contractual Life (Years)	6.1
Options Outstanding, Weighted Average Exercise Price	$ 18.15
Minimum Exercise Price	$ 18.00
Maximum Exercise Price	$ 19.00
$24.00 - $37.00 [Member]
Options Outstanding	1,019,100
Options Outstanding, Weighted Average Contractual Life (Years)	1.2
Options Outstanding, Weighted Average Exercise Price	$ 31.88
Options Exercisable	1,019,100
Options Exercisable, Weighted Average Exercise Price	$ 31.88
Minimum Exercise Price	$ 24.00
Maximum Exercise Price	$ 37.00