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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Nov. 30, 2013
Dec. 01, 2012
Nov. 30, 2013
Dec. 01, 2012
Mar. 02, 2013
Income Taxes          
Income tax expense (benefit) $ 1,388 $ 777 $ 6,810 $ (63,818)  
Adjustments to valuation allowance (28,389) (24,717) (63,081) 18,128  
Recoverable indemnification asset from Jean Coutu Group 32,550   32,550   30,710
Portion of unrecognized tax benefits which would impact the effective tax rate 32,827   32,827    
Valuation allowance against net deferred tax assets $ 2,160,594   $ 2,160,594   $ 2,223,675