Stockholders' Equity (Details 2) (USD $)		12 Months Ended						12 Months Ended
	Jan. 01, 2012 Employee Stock Option [Member] Y	Jan. 01, 2012 Employee Stock Option [Member] Range One [Member] Y	Jan. 01, 2012 Employee Stock Option [Member] Range Two [Member] Y	Jan. 01, 2012 Employee Stock Option [Member] Range Three [Member] Y	Jan. 01, 2012 Employee Stock Option [Member] Range Four [Member] Y	Jan. 01, 2012 Employee Stock Option [Member] Range Five [Member] Y	Jan. 02, 2011 Non-Employee Stock Option Plan [Member] Y	Jan. 02, 2011 Non-Employee Stock Option Plan [Member] Range One [Member] Y	Jan. 02, 2011 Non-Employee Stock Option Plan [Member] Range Two [Member] Y	Jan. 02, 2011 Non-Employee Stock Option Plan [Member] Range Three [Member] Y	Jan. 02, 2011 Non-Employee Stock Option Plan [Member] Range Four [Member] Y	Jan. 02, 2011 Non-Employee Stock Option Plan [Member] Range Five [Member] Y	Jan. 02, 2011 Non-Employee Stock Option Plan [Member] Range Six [Member] Y
Stock options outstanding and stock options exercisable under stock option plans
Minimum range of Exercise Prices		$ 13.45	$ 20.01	$ 30.01	$ 40.01	$ 50.01		$ 8.37	$ 10.01	$ 20.01	$ 30.01	$ 40.01	$ 50.01
Maximum range of Exercise Prices		$ 20.00	$ 30.00	$ 40.00	$ 50.00	$ 59.05		$ 10.00	$ 20.00	$ 30.00	$ 40.00	$ 50.00	$ 53.76
Stock Options Outstanding, Shares	2,322,845	285,384	217,893	651,919	813,239	354,410	404,692	14,155	82,424	85,315	84,798	102,000	36,000
Stock Options Outstanding, Weighted Average Exercise Price	$ 38.19	$ 16.74	$ 26.99	$ 36.36	$ 44.64	$ 50.92	$ 32.85	$ 9.32	$ 16.39	$ 26.37	$ 34.36	$ 46.18	$ 53.76
Stock Options Outstanding, Remaining Life	5.9	1.6	3.2	4.7	8.7	6.5	5.0	1.3	2.0	4.5	5.5	7.6	6.4
Stock Options Exercisable, Shares	1,586,480	285,384	217,893	651,919	126,224	305,060	361,933	14,155	82,424	81,102	78,252	70,000	36,000
Stock Options Exercisable, Weighted Average Exercise Price	$ 34.79	$ 16.74	$ 26.99	$ 36.36	$ 42.14	$ 50.86	$ 31.39	$ 9.32	$ 16.39	$ 26.19	$ 34.40	$ 44.66	$ 53.76