CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Operating activities:
Net loss from operations	$ (316,747)	$ (2,775,574)
Consolidated net income from discontinued operations	0	878,981
Adjustments to reconcile consolidated net loss to net cash used in operating activities:
Depreciation and amortization	83,914	45,537
Shares based compensation	22,501	2,219,068
Gain on sale of China operations	0	(837,720)
Income on Section 16 settlement	0	(400,000)
Changes in operating assets and liabilities:
Accounts receivable	(776,778)	2,725,507
Costs and estimated earnings in excess of billings on uncompleted contracts	26,486	4,387
Current assets held for sale	0	(3,853,621)
Prepaid expenses and other current assets	(58,074)	66,211
Other assets	6,857	(2,110)
Other assets held for sale	0	(34,523)
Accounts payable and accrued expenses	(261,750)	(3,149,544)
Current liabilities held for sale	0	2,200,030
Billings in excess of costs and estimated earnings on uncompleted contracts	1,122,833	374,840
Net cash used in operating activities	(150,758)	(2,538,531)
Investing activities:
Acquisition of property and equipment	(104,069)	(109,851)
Proceeds from sale of China operations, net of acquisition cost	0	1,325,744
Net cash (used in) provided by investing activities	(104,069)	1,215,893
Financing activities:
Borrowings under loan payable obligations	0	99,369
Repayment under loan payable obligations	(69,694)	(35,304)
Repayments under other payable to Zurich	0	(360,000)
Repayments of short term convertible note	0	(4,000)
Net cash provided by financing activities	359,937	1,275,065
Effect of exchange rate changes on cash	0	91,510
Net increase in cash and cash equivalents	105,110	43,937
Cash and cash equivalents, beginning of the period	2,235,597	2,364,360
Cash and cash equivalents, end of the period	2,340,707	2,408,297
Schedule of non-cash investing and financing activities:
Automobile financing	123,025	0
Declaration on preferred dividend payable	0	4,742,768
Deemed dividend on conversion of convertible preferred stock to common stock	560,990	744,499
Conversion of dividends payable related to make-whole amount to common stock	0	4,457,356
Issuance Of Warrants With Series H-2 Preferred Stock	231,248	0
Beneficial conversion feature of Series H-2 convertible preferred stock	183,284	0
Series H-2 Preferred Stock [Member]
Financing activities:
Proceeds from issuance of preferred stock and warrants	429,631	0
Series H-2 Convertible Preferred Stock [Member]
Schedule of non-cash investing and financing activities:
Deemed dividend on conversion of convertible preferred stock to common stock	183,284	0
Series F-1 Preferred Stock [Member]
Schedule of non-cash investing and financing activities:
Conversion of dividends payable related to make-whole amount to common stock	0	624,977
Series G-1 Preferred Stock [Member]
Schedule of non-cash investing and financing activities:
Conversion of dividends payable related to make-whole amount to common stock	0	337,981
Series H Preferred Stock [Member]
Schedule of non-cash investing and financing activities:
Conversion of preferred stock through the issuance of common stock	405,020	892,680
Conversion of preferred stock through the issuance of common stock	0	1,299,000
Series F And F1 Preferred Stock [Member]
Schedule of non-cash investing and financing activities:
Conversion of preferred stock through the issuance of common stock	0	3,292,741
Series G And G1 Preferred Stock [Member]
Schedule of non-cash investing and financing activities:
Conversion of preferred stock through the issuance of common stock	0	1,827,927
Series H-1 Preferred Stock [Member]
Financing activities:
Proceeds from issuance of preferred stock and warrants	0	1,575,000
Schedule of non-cash investing and financing activities:
Conversion of preferred stock through the issuance of common stock	639,500	75,000
Beneficial conversion feature of Series H-2 convertible preferred stock	$ 377,706	$ 0