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4. COMMON STOCK WARRANTS (Details) (WarrantMember)
3 Months Ended 12 Months Ended
Sep. 30, 2012
Mar. 31, 2012
WarrantMember
   
Expected dividend yield 0.00% 0.00%
Risk-free interest rate 0.10% 0.20%
Expected volatility 31.40% 57.30%
Expected term (in years) 6 months 11 days 1 year 14 days