Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Stockholders' Equity

v2.4.0.6
Consolidated Statements of Stockholders' Equity (USD $)
Total
Preferred Stock
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Beginning Balance at Dec. 31, 2011 $ 21,131,747 $ 10 $ 95,399 $ 266,393,645 $ (245,357,307)
Beginning Balance (in shares) at Dec. 31, 2011   10,083 95,398,961    
Issued restricted stock (in shares)     435,000    
Issued restricted stock 435   435    
Cancelled restricted stock (in shares)     (4,500)    
Cancelled restricted stock     (5) 5  
Issued stock upon exercise of stock options, net (in shares) 987,001   980,271    
Issued stock upon exercise of stock options, net 528,755   981 527,774  
Cancelled stock upon repurchase from executives (in shares)     (37,500)    
Cancelled stock upon repurchase from executives (100,875)   (37) (100,838)  
Issued stock to 401(k) plan (in shares)     17,390    
Issued stock to 401(k) plan 50,272   17 50,255  
Issued stock upon exercise of warrants, net (in shares)     20,000    
Issued stock upon exercise of warrants, net 58,601   20 58,581  
Stock compensation expense 1,133,866     1,133,866  
Preferred stock dividends (50,000)       (50,000)
Net loss (12,823,894)       (12,823,894)
Ending Balance at Jun. 30, 2012 $ 9,928,907 $ 10 $ 96,810 $ 268,063,288 $ (258,231,201)
Ending Balance (in shares) at Jun. 30, 2012   10,083 96,809,622