CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	3 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
OPERATING ACTIVITIES :
Consolidated net income (loss)	$ 993,154	$ (19,221)
Adjustments to reconcile consolidated net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	463,464	604,832
Gain from disposition of operations	(2,324,631)	0
Stock-based compensation	7,526	20,288
Provision for doubtful accounts	(23,495)	54,059
Amortization of debt issuance costs	30,092	0
Change in the fair value of acquisition-related contingent consideration	0	43,068
Gain on sale of fixed assets	(16,147)	(14,658)
Deferred income taxes	(81,924)	(26,080)
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	3,449,841	(3,351,665)
Costs and estimated earnings in excess of billings on uncompleted contracts	(1,151,709)	125,843
Inventory	(103,164)	366,610
Prepaid expenses and other current assets	(338,784)	(173,491)
Income taxes receivable	77,779	(52,507)
Prepaid taxes	39,931	(7,929)
Other assets	254,391	482
Accounts payable and accrued expenses	(907,324)	3,330,157
Billings in excess of costs and estimated earnings on uncompleted contracts	(1,112,013)	124,699
Deferred revenue	543,822	16,755
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(199,191)	1,041,242
INVESTING ACTIVITIES:
Acquisition of property and equipment, net	(205,881)	(116,473)
Proceeds from sale of operations, net of transaction costs	4,722,437	0
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	4,516,556	(116,473)
FINANCING ACTIVITIES:
Net proceeds from Section 16(b) settlement	222,413	0
Debt issuance costs	(27,220)	0
Repayments under lines of credit	(4,964,140)	(1,439,023)
Repayments under loans payable, net	(39,858)	(9,718)
Borrowings from (repayments to) joint venture partner, net	141,704	(304,623)
Repayments of capital lease obligations	(10,033)	(16,354)
Borrowings under other payable	793,927	0
NET CASH USED IN FINANCING ACTIVITIES	(3,883,207)	(1,769,718)
Effect of exchange rate changes on cash	12,479	29,165
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	446,637	(815,784)
CASH AND CASH EQUIVALENTS, BEGINNING OF THE PERIOD	811,283	4,879,106
CASH AND CASH EQUIVALENTS, END OF THE PERIOD	$ 1,257,920	$ 4,063,322