10. RESTRUCTURING EXPENSE (Details) (USD $)	3 Months Ended		6 Months Ended		545 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012
Charges Incurred During the Six Months Ended October 31, 2012	$ 170,298		$ 217,774		$ 217,774
Future lease obligations, net of sublease revenue
Charges Incurred During the Six Months Ended October 31, 2012			134,984
Amounts Paid Through October 31, 2012			21,632
Amounts Accrued at October 31, 2012	120,252		120,252		120,252
Employee severance, benefits and related costs for work force reductions
Charges Incurred During the Six Months Ended October 31, 2012			53,991
Amounts Paid Through October 31, 2012			53,991
Amounts Accrued at October 31, 2012
Other exit costs
Charges Incurred During the Six Months Ended October 31, 2012			28,799
Amounts Paid Through October 31, 2012			28,799
Amounts Accrued at October 31, 2012