Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 21,817,000	$ 8,970,000
Removal of loss (income) on discontinued operations	285,000	(1,562,000)
Income from continuing operations	22,102,000	7,408,000
Adjustments to reconcile income from continuing operations to net cash provided by continuing operating activities:
Non-cash stock compensation expense	1,316,000	637,000
Depreciation	522,000	455,000
Amortization of purchased intangible assets	243,000	334,000
Deferred income tax benefit	(139,000)	(51,000)
Changes in operating assets and liabilities:
Accounts receivable	(8,826,000)	(2,976,000)
Restricted cash		1,243,000
Costs and estimated earnings in excess of billings	1,603,000	(1,338,000)
Prepaid expenses and other assets	2,943,000	(4,020,000)
Accounts payable and accrued expenses	6,489,000	20,267,000
Billings in excess of costs and estimated earnings	5,389,000	58,088,000
Other, net		3,000
Net cash provided by continuing operating activities	31,642,000	80,050,000
Net cash used in discontinued operating activities	(78,000)	(1,335,000)
Net cash provided by operating activities	31,564,000	78,715,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment, net	(7,263,000)	(1,738,000)
Net cash provided by the sale of the assets of VLI		2,528,000
Net cash (used in) provided by investing activities	(7,263,000)	790,000
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from the sale of common stock	2,676,000	531,000
Dividends	(8,359,000)	(6,804,000)
Net cash used in financing activities	(5,683,000)	(6,273,000)
NET INCREASE IN CASH AND CASH EQUIVALENTS	18,618,000	73,232,000
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	156,524,000	83,292,000
CASH AND CASH EQUIVALENTS, END OF YEAR	175,142,000	156,524,000
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for income taxes	$ 9,977,000	$ 5,097,000