XML 27 R32.htm IDEA: XBRL DOCUMENT v2.4.0.6
Share-Based Payments (Details 2) (USD $)
 9 Months Ended
Jan. 31, 2013
Outstanding, Begining Balance 14,866,038
Granted 716,250
Forfeited (22,500)
Expired (515,833)
Canceled (25,000)
Outstanding, Ending Balance 15,018,955
Vested and expected to vest 15,018,955
Exercisable 10,668,412
Weighted Average Exercise Price, Outstanding, Begining Balance $ 0.88
Weighted Average Exercise Price, Granted $ 0.41
Weighted Average Exercise Price, Forfeited $ 0.67
Weighted Average Exercise Price, Expired $ 0.76
Weighted Average Exercise Price, Canceled $ 0.62
Weighted Average Exercise Price, Outstanding, Ending Balance $ 0.86
Weighted Average Exercise Price, Exercisable $ 0.88
Weighted Average Remaining Contractual Term, Outstanding, Begining Balance (in years) 7 years
Weighted Average Remaining Contractual Term, Outstanding, Ending Balance (in years) 7 years 1 month 6 days
Weighted Average Remaining Contractual Term, Exercisable (in years) 6 years 9 months 18 days
Aggregate Intrinsic Value, Outstanding, Begining Balance $ 0
Aggregate Intrinsic Value, Outstanding, Ending Balance 96,000
Aggregate Intrinsic Value, Exercisable $ 14,000
Non-Employees [Member]
  
Outstanding, Begining Balance 1,410,000
Granted 130,000
Forfeited 0
Expired (500,000)
Canceled 0
Outstanding, Ending Balance 1,040,000
Vested and expected to vest 1,040,000
Exercisable 933,334
Directors and Employees [Member]
  
Outstanding, Begining Balance 13,456,038
Granted 586,250
Forfeited (22,500)
Expired (15,833)
Canceled (25,000)
Outstanding, Ending Balance 13,978,955
Vested and expected to vest 13,978,955
Exercisable 9,735,078