SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual) (USD $)	0 Months Ended	12 Months Ended
	Dec. 05, 2012	Apr. 30, 2013	Apr. 30, 2012
Provision For Anticipated Losses		$ 23,000	$ 1,887,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number		116,279	33,819
Convertible Notes Payable	4,000,000
Debt Conversion, Converted Instrument, Shares Issued		1,857,097
Debt Instrument, Convertible, Conversion Price		$ 2.1539
Shares issued to purchase warrants	2,274,796	2,274,795
Contract Receivable Retainage, Total		871,086	1,966,254
Accounts Receivable And Retainage Receivable Total		1,511,000
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Participants		45.00%
Valuation Allowance, Deferred Tax Asset, Change in Amount		2,300,000	6,600,000
Deferred Tax Assets, Valuation Allowance		7,700,000
Share-Based Compensation		111,683	43,917
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options		$ 59,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		8 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		97,143
the Cooper Projects [Member]
Revenue Percentage		13.60%	15.50%