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Condensed Balance Sheets (USD $)
Jun. 30, 2013
Dec. 31, 2012
Current Assets:    
Cash and cash equivalents $ 171,640 $ 165,249
Accounts receivable, net of allowance for doubtful accounts of $73,849 as of June 30, 2013 and $179,259 as of December 31, 2012 1,061,135 978,982
Inventories 857,120 638,561
Advances on contracts 508,469 476,969
Prepaid expenses and other current assets 161,155 239,061
Total current assets 2,759,519 2,498,822
Accounts receivable-long term, net of allowance for doubtful accounts of $167,971 as of December 31, 2012 0 119,201
Advances on contracts 2,163,907 2,350,477
Investment in Milestone Education LLC 50,000  
Furniture, Fixtures & Equipment net of accumulated depreciation of $467,483 as of June 30, 2013 and $458,708 as of December 31, 2012 30,640 36,624
Patents, net of accumulated amortization of $459,380 as of June 30, 2013 and $420,556 as of December 31, 2012 626,402 648,662
Other assets 7,317 7,317
Total assets 5,637,785 5,661,103
Current Liabilities:    
Accounts payable 1,505,789 2,336,594
Accrued interest on Notes Payable 405,202 581,407
Accrued expenses and other payables 614,681 356,563
Total current liabilities 2,525,672 3,274,564
Long-term Liabilities:    
Notes Payable 450,000 450,000
Total long-term liabilities 450,000 450,000
Total liabilities 2,975,672 3,724,564
Commitments and Contingencies      
Stockholders’ Equity    
Common stock, par value $.001; authorized 50,000,000 shares; 16,929,578 shares issued 1,655,317 shares to be issued and 16,896,245 shares outstanding as of June 30, 2013; 16,563,306 shares issued, 1,635,709 shares to be issued, and 16,529,973 shares outstanding as of December 31, 2012 18,585 18,199
Additional paid-in capital 65,060,658 64,560,224
Accumulated deficit (61,505,614) (61,730,368)
Treasury stock, at cost, 33,333 shares (911,516) (911,516)
Total stockholders’ equity 2,662,113 1,936,539
Total liabilities and stockholders’ equity $ 5,637,785 $ 5,661,103