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Sales by Category
12 Months Ended
Mar. 31, 2012
Segment Reporting [Abstract]  
Sales by Category
(12)        Sales by Category
 
The following table provides a breakdown of the percentage of total sales by each category during the indicated periods:
 
   
Year Ended March 31,
 
   
2012
   
2011
   
2010
 
                   
Non-prescription medications and supplies
    59 %     61 %     64 %
Prescription medications
    40 %     38 %     35 %
Shipping and handling charges and other
    1 %     1 %     1 %
Total
    100 %     100 %     100 %