Consolidated Balance Sheets (USD $)	Jan. 31, 2013	Jan. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 175,142,000	$ 156,524,000
Accounts receivable, net of allowance for doubtful accounts	24,879,000	16,053,000
Costs and estimated earnings in excess of billings	1,178,000	2,781,000
Deferred income tax assets	1,303,000	691,000
Prepaid expenses and other current assets	1,606,000	4,528,000
TOTAL CURRENT ASSETS	204,108,000	180,577,000
Property, plant and equipment, net of accumulated depreciation (including $5,309,000 and $1,469,000 in costs related to variable interest entities as of January 31, 2013 and 2012, respectively)	9,468,000	2,761,000
Goodwill	18,476,000	18,476,000
Intangible assets, net of accumulated amortization	2,331,000	2,574,000
Deferred income tax and other assets	341,000	864,000
TOTAL ASSETS	234,724,000	205,252,000
CURRENT LIABILITIES:
Accounts payable	32,699,000	29,524,000
Accrued expenses	9,488,000	6,751,000
Billings in excess of costs and estimated earnings	73,359,000	68,004,000
TOTAL CURRENT LIABILITIES	115,546,000	104,279,000
Other liabilities	10,000	10,000
TOTAL LIABILITIES	115,556,000	104,289,000
COMMITMENTS AND CONTINGENCIES (see Notes 11 and 12)
STOCKHOLDERS' EQUITY:
Preferred stock, par value $0.10 per share - 500,000 shares authorized; no shares issued and outstanding
Common stock, par value $0.15 per share - 30,000,000 shares authorized;13,977,560 and 13,661,098 shares issued at January 31, 2013 and 2012, respectively; 13,974,327 and 13,657,865 shares outstanding at January 31, 2013 and 2012, respectively	2,096,000	2,049,000
Warrants outstanding		590,000
Additional paid-in capital	95,004,000	89,714,000
Retained earnings	23,850,000	8,944,000
Treasury stock at cost - 3,233 shares at January 31, 2013 and 2012	(33,000)	(33,000)
TOTAL STOCKHOLDERS' EQUITY	120,917,000	101,264,000
Noncontrolling interest (variable interest entities, see Note 4)	(1,749,000)	(301,000)
TOTAL EQUITY	119,168,000	100,963,000
TOTAL LIABILITIES AND EQUITY	$ 234,724,000	$ 205,252,000