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Commitments and Contingencies (Details) (USD $)
3 Months Ended 6 Months Ended 2 Months Ended 6 Months Ended
Aug. 31, 2014
Aug. 31, 2013
Aug. 31, 2014
Aug. 31, 2013
Aug. 31, 2014
Healthy Directions
Aug. 31, 2014
Minimum
Aug. 31, 2014
Maximum
Warranties              
Product warranty period           2 years 5 years
Accrual for warranty returns              
Beginning balance $ 19,140,000 $ 20,782,000 $ 19,269,000 $ 23,150,000      
Additions to the accrual 18,554,000 13,020,000 31,840,000 26,598,000      
Reductions of the accrual - payments and credits issued (15,202,000) (12,445,000) (28,617,000) (28,391,000)      
Ending balance 22,492,000 21,357,000 22,492,000 21,357,000      
Opening balance and accrual additions for warranty returns         3,190,000    
Payments and credits issued         $ 1,820,000