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Sales by Category (Tables)
12 Months Ended
Mar. 31, 2014
Segment Reporting [Abstract]  
Schedule of breakdown of the percentage of total sales
   
Year Ended March 31,
 
   
2014
   
2013
   
2012
 
                   
Non-prescription medications and supplies
    55 %     59 %     59 %
Prescription medications
    44 %     40 %     40 %
Shipping and handling charges and other
    1 %     1 %     1 %
Total
    100 %     100 %     100 %