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Balance Sheets (USD $)
Jun. 30, 2012
Dec. 31, 2011
Assets    
Cash and cash equivalents $ 242,998 $ 422,984
Investments in available-for-sale securities 2,627,511 2,491,773
Other current assets 18,271 21,868
Total current assets 2,888,780 2,936,625
Other assets:    
Investment in ClearSign 0 1,000,000
Total Assets 2,888,780 3,936,625
Liabilities and stockholders' equity    
Accounts payable 27,133 5,451
Accrued stock compensation 15,625 15,625
Income taxes payable 7,213 0
Conversion feature liability 114,354 81,101
Total current liabilities 164,325 102,177
Commitments and contingencies      
Stockholders' equity:    
Common stock, $0.01 par value, 100,000,000 shares authorized; 8,161,821 and 8,028,779 shares issued and outstanding at June 30, 2012 and December 31, 2011, respectively 81,618 80,287
Additional paid-in capital 64,322,472 64,292,551
Accumulated deficit (61,835,422) (60,681,860)
Accumulated other comprehensive loss (12,709) (25,026)
Total stockholders' equity 2,555,959 3,665,952
Total liabilities and stockholders' equity 2,888,780 3,936,625
Redeemable Convertible Preferred Stock [Member]
    
Liabilities and stockholders' equity    
Redeemable convertible preferred stock, $0.01 par value, 1,000,000 shares authorized; 168 shares issued and outstanding ($168,496 aggregate liquidation value) $ 168,496 $ 168,496