LIQUIDITY AND BASIS OF PRESENTATION (Details Textual) (USD $)	0 Months Ended	9 Months Ended
	Dec. 04, 2012	Jan. 31, 2013	Apr. 30, 2012	Jan. 31, 2012	Apr. 30, 2011
Percentage Of International Operation		60.00%
Line of Credit Facility, Remaining Borrowing Capacity			$ 0
Cash and cash equivalents		2,136,045	811,283	1,746,624	4,879,106
Working Capital		1,346,836
Total current assets		17,931,300	28,557,252
Total current liabilities		16,584,464	29,686,874
Proceeds from (Payments for) Deposits Applied to Debt Retirements	2,178,516
Restricted cash		926,389	0
Purchase Agreement [Member]
Cash and cash equivalents		2,136,045
Zurich and F&D [Member]
Reclassified Accounts Receivable		4,369,765
Reclassified Accounts Payable		5,863,459
Other Payable Current		1,493,694
Zurich [Member]
Repayments of Short-term Debt		793,927
Other Payable		2,287,621
Other Payable Current		1,697,000
Settlement Of Claims		2,421,425
Bonds [Member] | Zurich [Member]
Settlement Of Claims		2,421,425
Convertible Notes Payable [Member]
Interest and Debt Expense		0
Repayments of Debt		0
Additional Interest And Debt Expense		0
Convertible Notes Payable [Member] | Subsequent Event [Member]
Line of Credit Facility, Amount Outstanding	2,000,000
Interest and Debt Expense		78,516
Warrants Issued During Period Warrants New Issues	15,923,567
Proceeds from Notes Payable	4,000,000
Proceeds from (Payments for) Deposits Applied to Debt Retirements	2,178,516
Borrowing Condition Amount	250,000
Repayments of Debt		2,000,000
Additional Interest And Debt Expense		100,000
August 31, 2012 [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 2,000,000