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Discontinued Operations (Narrative) (Details)
0 Months Ended3 Months Ended9 Months Ended
Mar. 18, 2011
USD ($)
Oct. 01, 2011
USD ($)
Oct. 02, 2010
USD ($)
Oct. 01, 2011
USD ($)
Oct. 02, 2010
USD ($)
Aug. 03, 2011
EUR (€)
Dec. 31, 2010
USD ($)
Discontinued Operations [Abstract]       
Proceeds from the sale of business$ 188,588,000  $ 161,206,000$ 0  
Short-term receivable from buyer27,580,00027,580,000 27,580,000 1,000,0000
Gain (loss) on sale of discontinued operations (1,248,000)066,753,0000  
Income tax benefit (expense) on sale $ 13,308,000$ 0$ (11,773,000)$ 0  
Bears interest rate     6.50%