Income Taxes (Open Years For Income Tax Audit Purposes In Major Taxing Jurisdictions) (Details)	9 Months Ended
	Sep. 29, 2012
U.S. Federal [Member]
Income Tax Contingency [Line Items]
Open income tax years by major tax jurisdiction	2008 and forward
Canada Federal [Member]
Income Tax Contingency [Line Items]
Open income tax years by major tax jurisdiction	2008 and forward
Ontario Provincial [Member]
Income Tax Contingency [Line Items]
Open income tax years by major tax jurisdiction	2006 and forward
Massachusetts [Member]
Income Tax Contingency [Line Items]
Open income tax years by major tax jurisdiction	2008 and forward
North Carolina [Member]
Income Tax Contingency [Line Items]
Open income tax years by major tax jurisdiction	2008 and forward
New York [Member]
Income Tax Contingency [Line Items]
Open income tax years by major tax jurisdiction	2008 and forward
Illinois [Member]
Income Tax Contingency [Line Items]
Open income tax years by major tax jurisdiction	2008 and forward
Georgia [Member]
Income Tax Contingency [Line Items]
Open income tax years by major tax jurisdiction	2009 and forward