Income Taxes (Details) (USD $) In Thousands	6 Months Ended
	Jun. 26, 2011
Tax examinations and assessments [Abstract]
Tax Years Under Examination by IRS, Completed	2006 and 2007
Recognition of Previously Unrecognized Tax Benefit, IRS	$ 22,101
Reversal of Deferred Tax Asset	1,482
Total Income Tax Benefit	20,477
Tax Years Under Examination, Mexico	2000 to 2005
Total Amount of Mexican Tax Assessments	195,860
Total Amount of Bonds Posted for Mexican Tax Assessments, 2000 - 2003	131,720
Total Amount of Bonds Posted for Mexican Tax Assessments, 2004, Subsequent to Period End	$ 39,490