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Note 2 - Dispositions and Exit Activities (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Jul. 03, 2011
Dec. 31, 2010
Sep. 28, 2012
Oct. 02, 2011
Percentage Of Subsidiary Stock Sold     100.00%  
Significant Acquisitions and Disposals, Acquisition Costs or Sale Proceeds (in Dollars)     $ 2,533  
Proceeds from Divestiture of Businesses (in Dollars)     2,133  
Length Of Time Sales Proceeds Held In Escrow     1 year  
Escrow Deposit (in Dollars)     250  
Sales Price Reserved For Employee Retention Programs (in Dollars)     150  
Post Closing Working Capital Adjustment Period     90 days  
Divestiture Non Compete Period     2 years  
Divestiture No Tampering Period     2 years  
Asset Impairment Charges (in Dollars)   $ 13,793   $ 941
Restructuring and Related Cost, Number of Positions Eliminated 40      
Restructuring and Related Cost, Number of Facilities Closed 5      
Minimum [Member]
        
Divestiture Representations And Warranties Period     2 years  
Maximum [Member]
        
Divestiture Representations And Warranties Period     3 years