v2.4.0.6
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY AND COMPREHENSIVE LOSS (USD $)
Common Stock
Additional Paid-in-Capital
Accumulated Other Comprehensive Income (Loss)
Treasury Stock
Accumulated Deficit
Total
Total Comprehensive Loss
Balance at Dec. 31, 2008 $ 1,281,640 $ 765,347,706 $ (359,253) $ (743,586) $ (639,662,385) $ 125,864,122  
Balance (in shares) at Dec. 31, 2008 12,816,400     40,211      
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net loss         (40,708,552) (40,708,552) (40,708,552)
Foreign currency translation gain     1,293,770     1,293,770 1,293,770
Unrealized loss on available-for-sale securities, net of reclassification adjustments for realized net losses and gains     (131,308)     (131,308) (131,308)
Total comprehensive loss             (39,546,090)
Stock based compensation 22,190 2,264,858       2,287,048  
Stock based compensation (in shares) 221,900            
Stock issued under employee stock purchase plan 2,083 196,008       198,091  
Stock issued under employee stock purchase plan (in shares) 20,824            
Purchase of treasury shares       (534,418)   (534,418)  
Purchase of treasury shares (in shares)       58,409      
Balance at Dec. 31, 2009 1,305,913 767,808,572 803,209 (1,278,004) (680,370,937) 88,268,753  
Balance (in shares) at Dec. 31, 2009 13,059,124     98,620      
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net loss         (46,958,921) (46,958,921) (46,958,921)
Foreign currency translation gain     276,959     276,959 276,959
Unrealized loss on available-for-sale securities, net of reclassification adjustments for realized net losses and gains     (114,300)     (114,300) (114,300)
Total comprehensive loss             (46,796,262)
Stock based compensation 31,079 1,851,299       1,882,378  
Stock based compensation (in shares) 310,800             
Reclassification adjustment - stock split (1,203,293) 1,203,293          
Purchase of treasury shares       (441,506)   (441,506)  
Purchase of treasury shares (in shares)       81,829      
Balance at Dec. 31, 2010 133,699 770,863,164 965,868 (1,719,510) (727,329,858) 42,913,363  
Balance (in shares) at Dec. 31, 2010 13,369,924     180,449      
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net loss         (27,453,954) (27,453,954) (27,453,954)
Foreign currency translation gain     (55,626)     (55,626) (55,626)
Unrealized loss on available-for-sale securities, net of reclassification adjustments for realized net losses and gains     18,502     18,502 18,502
Total comprehensive loss             (27,491,078)
Stock based compensation 2,217 1,848,330   (3,030)   1,847,517  
Stock based compensation (in shares) 221,737     833      
Public offering common stock, net 93,328 11,831,027       11,924,355  
Public offering common stock, net (in shares) 9,332,750             
Issuance of treasury shares   (328,650)   328,650      
Issuance of treasury shares (in shares)        (35,000)      
Purchase of treasury shares       (158,492)   (158,492)  
Purchase of treasury shares (in shares)       19,624      
Balance at Dec. 31, 2011 $ 229,244 $ 784,213,871 $ 928,744 $ (1,552,382) $ (754,783,812) $ 29,035,665  
Balance (in shares) at Dec. 31, 2011 22,924,411     165,906