Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
	Apr. 30, 2012	Apr. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 4,262,000	$ 606,000
Removal of loss on discontinued operations	285,000	139,000
Income from continuing operations	4,547,000	745,000
Adjustments to reconcile income from continuing operations to net cash provided by (used in) continuing operating activities:
Deferred income tax expense	21,000	14,000
Stock option compensation expense	236,000	211,000
Amortization of purchased intangibles	61,000	87,000
Depreciation and other amortization	117,000	117,000
Changes in operating assets and liabilities:
Restricted cash		1,243,000
Accounts receivable	(2,463,000)	7,387,000
Costs and estimated earnings in excess of billings	315,000	1,022,000
Prepaid expenses and other assets	2,428,000	(850,000)
Accounts payable and accrued expenses	(3,388,000)	(8,155,000)
Billings in excess of costs and estimated earnings	18,026,000	(7,350,000)
Net cash provided by (used in) continuing operating activities	19,900,000	(5,529,000)
Net cash used in discontinued operating activities	(78,000)	(235,000)
Net cash provided by (used in) operating activities	19,822,000	(5,764,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment, net	(1,164,000)	(9,000)
Net cash provided by the sale of the assets of VLI		1,369,000
Net cash (used in) provided by investing activities	(1,164,000)	1,360,000
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from the exercise of stock options and warrants	127,000	18,000
Net cash provided by financing activities	127,000	18,000
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	18,785,000	(4,386,000)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	156,524,000	83,292,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 175,309,000	$ 78,906,000