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Restructuring Charges (Details 1) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended 12 Months Ended
Apr. 01, 2012
Jul. 01, 2012
Jan. 01, 2012
Restructuring activities by segment      
Total amounts expected to be incurred   $ 16,316 $ 6,177
Cumulative amounts incurred to date   11,207 4,495
Total amounts incurred in 2012 16,300 11,207 2,572
Modular Carpet [Member]
      
Restructuring activities by segment      
Total amounts expected to be incurred   16,316 5,755
Cumulative amounts incurred to date   11,207 4,073
Total amounts incurred in 2012   11,207 2,430
Bentley Prince Street [Member]
      
Restructuring activities by segment      
Total amounts expected to be incurred   0 422
Cumulative amounts incurred to date   0 422
Total amounts incurred in 2012   0 142
Corporate [Member]
      
Restructuring activities by segment      
Total amounts expected to be incurred   0 0
Cumulative amounts incurred to date   0 0
Total amounts incurred in 2012   $ 0 $ 0