Income Taxes (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012	Dec. 31, 2012	Dec. 31, 2011
Income Taxes (Additional Textual) [Abstract]
Foreign earning repatriated amount	$ 86,044,000	$ 83,039,000	$ 86,044,000	$ 83,039,000	$ 109,571,000	$ 76,412,000
Income Taxes (Textual) [Abstract]
Effective Tax Rate	1546.80%	26.90%	319.30%	18.00%
Income Tax Expense	12,118,000	1,212,000	11,308,000	1,226,000
Expenses Related to cash repatriation	10,800,000		10,800,000
June 2013 Plan [Member]
Income Taxes (Additional Textual) [Abstract]
Foreign earning repatriated amount	$ 30,000,000		$ 30,000,000