Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 33,312,000	$ 15,956,000
Removal of loss on discontinued operations		285,000
Income from continuing operations	33,312,000	16,241,000
Adjustments to reconcile income from continuing operations to net cash provided by continuing operating activities:
Gains on the deconsolidation of variable interest entities	(2,444,000)
Deferred income tax expense	1,482,000	406,000
Stock option compensation expense	1,152,000	906,000
Depreciation	407,000	385,000
Amortization of purchased intangibles	182,000	182,000
Changes in operating assets and liabilities:
Accounts receivable	4,372,000	(9,708,000)
Costs and estimated earnings in excess of billings	973,000	1,781,000
Prepaid expenses and other assets	(1,110,000)	2,618,000
Accounts payable and accrued expenses	(12,124,000)	15,872,000
Billings in excess of costs and estimated earnings	1,856,000	14,588,000
Net cash provided by continuing operating activities	28,058,000	43,271,000
Net cash used in discontinued operating activities		(78,000)
Net cash provided by operating activities	28,058,000	43,193,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment, net	(925,000)	(5,928,000)
Net cash used in investing activities	(925,000)	(5,928,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Loans to Moxie Projects	(2,326,000)
Repayment of loans made to Moxie Liberty	4,294,000
Deconsolidation of the cash of variable interest entities	(399,000)
Net proceeds from the exercise of stock options and conversion of warrants	2,506,000	2,267,000
Net cash provided by financing activities	4,075,000	2,267,000
NET INCREASE IN CASH AND CASH EQUIVALENTS	31,208,000	39,532,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	175,142,000	156,524,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	206,350,000	196,056,000
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for income taxes	$ 18,294,000	$ 6,519,000