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Condensed Balance Sheets (USD $)
Sep. 30, 2011
Dec. 31, 2010
Assets:  
Cash and cash equivalents$ 23,072,000$ 21,348,000
Royalty Receivable1,139,0001,339,000
Other current assets33,00089,000
Total current assets24,244,00022,776,000
Other assets:  
Security deposits19,0006,000
Deferred tax asset6,860,000 
Patents, net of accumulated depreciation76,00083,000
Total other assets6,955,00089,000
Total assets31,199,00022,865,000
Liabilities:  
Accounts payable30,00078,000
Accrued expenses1,912,0002,031,000
Deferred Rent7,000 
Income Taxes Payable6,00061,000
Total liabilities1,955,0002,170,000
Commitments and contingencies  
Stockholders' Equity  
Common stock - $0.01 par value; authorized 50,000,000 shares; 25,782,893 and 25,931,879 shares issued and outstanding at September 30,2011 and December 31,2010, respectively258,000259,000
Additional paid-in capital57,547,00057,266,000
Accumulated deficit(28,561,000)(36,830,000)
Total stockholders' equity29,244,00020,695,000
Total liabilities and stockholder's equity$ 31,199,000$ 22,865,000