Income Taxes (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Income Taxes (Textual) [Abstract]
Income tax benefit	$ (490,000)	$ 5,652,000	$ 1,521,000	$ 11,395,000
Discrete benefit for tax assets	1,400,000
Effective tax rate without discrete item	39.00%
Income tax provision	500,000	5,700,000	1,500,000	11,400,000
Maximum amount company recognize from unrecognized tax benefit	$ 200,000		$ 200,000