Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 6,940,000	$ 4,262,000
Removal of loss on discontinued operations		285,000
Income from continuing operations	6,940,000	4,547,000
Adjustments to reconcile income from continuing operations to net cash (used in) provided by continuing operating activities:
Gain on deconsolidation of variable interest entity	(1,120,000)
Stock option compensation expense	436,000	236,000
Deferred income tax expense	382,000	21,000
Depreciation	129,000	117,000
Amortization of purchased intangibles	61,000	61,000
Changes in operating assets and liabilities:
Accounts receivable	5,589,000	(2,463,000)
Costs and estimated earnings in excess of billings	183,000	315,000
Prepaid expenses and other assets	44,000	2,428,000
Accounts payable and accrued expenses	(4,323,000)	(3,388,000)
Billings in excess of costs and estimated earnings	(11,874,000)	18,026,000
Net cash (used in) provided by continuing operating activities	(3,553,000)	19,900,000
Net cash used in discontinued operating activities		(78,000)
Net cash (used in) provided by operating activities	(3,553,000)	19,822,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment, net	(684,000)	(1,164,000)
Net cash used in investing activities	(684,000)	(1,164,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Increase in loans to Moxie Liberty	(1,397,000)
Deconsolidation of variable interest entity cash	(121,000)
Net proceeds from the exercise of stock options and warrants		127,000
Net cash (used in) provided by financing activities	(1,518,000)	127,000
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(5,755,000)	18,785,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	175,142,000	156,524,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	169,387,000	175,309,000
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for income taxes	$ 1,833,000	$ 2,000