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Supplemental Cash Flow Information (Details) (USD $)
In Thousands
6 Months Ended
Jul. 02, 2011
Jul. 03, 2010
Cash paid (received) during the period for:    
Interest expense $ 5,167 $ 9,310
Interest income (942) (445)
Income taxes, net of refunds received 36,190 14,669
Supplemental non-cash investing and financing activities:    
Accounts payable for purchase of fixed assets $ 6,206 $ 4,999