CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	9 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
OPERATING ACTIVITIES:
Consolidated net loss	$ (641,061)	$ (11,922,444)
Adjustments to reconcile consolidated net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	1,106,806	1,760,872
(Gain) loss from disposition of operations	(1,826,539)	1,027,637
Amortization of notes discount	688,460	0
Change in the fair value of derivative liabilities	702,574	0
Stock-based compensation	102,673	59,413
Provision for doubtful accounts	(15,226)	575,418
Amortization of debt issuance costs	399,335	0
Change in the fair value of acquisition-related contingent consideration	0	83,628
(Gain) loss on sale of fixed assets	(31,294)	21,517
Deferred income taxes	(229,896)	4,465,111
Changes in operating assets and liabilities, net of effects of acquisitions:
Restricted cash	(926,389)	0
Accounts receivable	1,377,734	(1,666,320)
Costs and estimated earnings in excess of billings on uncompleted contracts	142,359	1,585,824
Deferred contract costs	(72,723)	0
Inventory	(18,376)	660,669
Prepaid expenses and other current assets	(329,484)	(458,182)
Income taxes receivable	(24,002)	1,113,802
Prepaid taxes	40,237	(78,514)
Other assets	(113,403)	172,385
Accounts payable and accrued expenses	(1,857,462)	2,906,785
Billings in excess of costs and estimated earnings on uncompleted contracts	(1,869,180)	1,237,318
Deferred revenue	661,564	103,313
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(2,733,293)	1,648,232
INVESTING ACTIVITIES:
Acquisition of property and equipment, net	(249,093)	(387,033)
Acquisition of businesses, net of cash received	0	(1,047,732)
Proceeds from sale of operations, net of transaction costs	4,547,049	1,701,062
NET CASH PROVIDED BY INVESTING ACTIVITIES	4,297,956	266,297
FINANCING ACTIVITIES:
Net proceeds from Section 16(b) settlement	222,413	0
Debt issuance costs	(230,794)	(667,232)
Borrowings under lines of credit	0	3,103,830
Repayments under lines of credit	(4,964,140)	(7,000,000)
Proceeds from senior secured convertible notes	4,000,000	0
Repayments under loans payable, net	(66,537)	(10,176)
Repayments to joint venture partner, net	(2,355,526)	(411,399)
Repayments of capital lease obligations	(15,465)	(43,783)
Borrowings under short-term bank loan	2,380,605	0
Borrowings under other payable	793,927	0
NET CASH USED IN FINANCING ACTIVITIES	(235,517)	(5,028,760)
Effect of exchange rate changes on cash	(4,384)	(18,251)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	1,324,762	(3,132,482)
CASH AND CASH EQUIVALENTS, BEGINNING OF THE PERIOD	811,283	4,879,106
CASH AND CASH EQUIVALENTS, END OF THE PERIOD	$ 2,136,045	$ 1,746,624