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Condensed Consolidated Balance Sheets (USD $)
Apr. 30, 2014
Jan. 31, 2014
CURRENT ASSETS:    
Cash and cash equivalents $ 313,761,000 $ 272,209,000
Accounts receivable, net of allowance for doubtful accounts 28,684,000 23,687,000
Costs and estimated earnings in excess of billings 200,000 527,000
Prepaid expenses 2,749,000 1,581,000
Deferred income tax assets   178,000
Other current assets 2,312,000 377,000
TOTAL CURRENT ASSETS 347,706,000 298,559,000
Property, plant and equipment, net of accumulated depreciation 4,107,000 4,183,000
Goodwill 18,476,000 18,476,000
Intangible assets, net of accumulated amortization 2,028,000 2,088,000
TOTAL ASSETS 372,317,000 323,306,000
CURRENT LIABILITIES:    
Accounts payable 25,677,000 22,589,000
Accrued expenses 3,630,000 7,911,000
Deferred income tax liabilities 819,000  
Billings in excess of costs and estimated earnings 177,517,000 134,736,000
TOTAL CURRENT LIABILITIES 207,643,000 165,236,000
Deferred income tax liabilities 372,000 293,000
TOTAL LIABILITIES 208,015,000 165,529,000
COMMITMENTS AND CONTINGENCIES (Note 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; 14,372,634 and 14,289,134 shares issued at April 30 and January 31, 2014, respectively; 14,369,401 and 14,285,901 shares outstanding at April 30 and January 31, 2014, respectively 2,156,000 2,143,000
Additional paid-in capital 102,575,000 100,863,000
Retained earnings 56,810,000 53,335,000
Treasury stock at cost - 3,233 shares at April 30 and January 31, 2014 (33,000) (33,000)
TOTAL STOCKHOLDERS' EQUITY 161,508,000 156,308,000
Noncontrolling interests (Note 2) 2,794,000 1,469,000
TOTAL EQUITY 164,302,000 157,777,000
TOTAL LIABILITIES AND EQUITY $ 372,317,000 $ 323,306,000