Consolidated Balance Sheets (USD $)	Jan. 31, 2014	Jan. 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$ 272,209,000	$ 175,142,000
Accounts receivable, net of allowance for doubtful accounts	23,687,000	24,879,000
Costs and estimated earnings in excess of billings	527,000	1,178,000
Deferred income tax assets	178,000	1,303,000
Prepaid expenses and other current assets	1,958,000	1,606,000
TOTAL CURRENT ASSETS	298,559,000	204,108,000
Property, plant and equipment, net of accumulated depreciation (including $5,309,000 in costs related to variable interest entities as of January 31, 2013)	4,183,000	9,468,000
Goodwill	18,476,000	18,476,000
Intangible assets, net of accumulated amortization	2,088,000	2,331,000
Deferred income tax and other assets		341,000
TOTAL ASSETS	323,306,000	234,724,000
CURRENT LIABILITIES:
Accounts payable	22,589,000	32,699,000
Accrued expenses	7,911,000	9,488,000
Billings in excess of costs and estimated earnings	134,736,000	73,359,000
TOTAL CURRENT LIABILITIES	165,236,000	115,546,000
Deferred income tax and other liabilities	293,000	10,000
TOTAL LIABILITIES	165,529,000	115,556,000
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; 14,289,134 and 13,977,560 shares issued at January 31, 2014 and 2013, respectively; 14,285,901 and 13,974,327 shares outstanding at January 31, 2014 and 2013, respectively	2,143,000	2,096,000
Additional paid-in capital	100,863,000	95,004,000
Retained earnings	53,335,000	23,850,000
Treasury stock at cost - 3,233 shares at January 31, 2014 and 2013	(33,000)	(33,000)
TOTAL STOCKHOLDERS' EQUITY	156,308,000	120,917,000
Noncontrolling interests	1,469,000	(1,749,000)
TOTAL EQUITY	157,777,000	119,168,000
TOTAL LIABILITIES AND EQUITY	$ 323,306,000	$ 234,724,000