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Compensation Cost Allocated to Cost of Revenues and Operating Expenses (Detail) (USD $)
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Cost of revenues
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Stock-based compensation cost $ 50,151 $ 60,224 $ 78,559
Sales and marketing
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Stock-based compensation cost 122,316 138,930 161,506
Product development
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Stock-based compensation cost 321,473 385,737 187,378
General and administrative
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Stock-based compensation cost $ 262,150 $ 202,983 $ 131,714