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Balance Sheets (USD $)
Aug. 31, 2012
May 31, 2012
Current assets:    
Cash and cash equivalents $ 277,816 $ 73,952
Accounts receivable, net   5,610,328
Inventory   8,372,535
Costs and estimated earnings in excess of billings   5,492,028
Other current assets   1,432,717
Total current assets   20,981,560
Maintenance and other inventory, net   844,834
Property and equipment, net   4,481,953
Other assets   153,550
Total assets   26,461,897
Current liabilities:    
Short term borrowings   261,657
Accounts payable   3,361,742
Accrued commissions   631,221
Billings in excess of costs and estimated earnings   668,900
Other current liabilities   2,257,732
Total current liabilities   7,181,252
Long-term liabilities   283,985
Stockholders' Equity:    
Common stock and additional paid-in capital   7,372,689
Retained earnings   14,122,954
Treasury stock - at cost   (2,498,983)
Total stockholders'equity   18,996,660
Total liabilities and shareholders' equity   26,461,897
Unaudited
    
Current assets:    
Cash and cash equivalents 277,816  
Accounts receivable, net 8,357,491  
Inventory 8,938,339  
Costs and estimated earnings in excess of billings 3,863,436  
Other current assets 1,300,475  
Total current assets 22,737,557  
Maintenance and other inventory, net 955,752  
Property and equipment, net 4,882,757  
Other assets 154,896  
Total assets 28,730,962  
Current liabilities:    
Short term borrowings 3,740,000  
Accounts payable 1,842,637  
Accrued commissions 700,458  
Billings in excess of costs and estimated earnings 235,608  
Other current liabilities 2,285,235  
Total current liabilities 8,803,938  
Long-term liabilities 283,985  
Stockholders' Equity:    
Common stock and additional paid-in capital 7,411,251  
Retained earnings 14,730,771  
Treasury stock - at cost (2,498,983)  
Total stockholders'equity 19,643,039  
Total liabilities and shareholders' equity $ 28,730,962