CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY (USD $)
Common Stock Shares
Common Stock Amount
Additional Paid-In Capital
Accumulated Other Comprehensive Income (Loss)
USD ($)
Treasury Stock Shares
Treasury Stock Amount
Accumulated Deficit
USD ($)
Total Stockholders' (Deficit) Equity
USD ($)
Balance at Dec. 31, 2010 13,369,924 133,699 770,863,164 965,868 180,449 (1,719,510) (727,329,858) 42,913,363
Net loss attributable to the Company             $ (27,453,954) $ (27,453,954)
Other comprehensive loss       (37,124)       (37,124)
Stock based compensation 221,737 2,217 1,848,330   833 (3,030)   1,847,517
Public offering common stock, net 9,332,750 93,328 11,831,027         11,924,355
Issuance of treasury shares     (328,650)   (35,000) 328,650    
Purchase of treasury shares         19,624 (158,492)   (158,492)
Other comprehensive loss       (37,124)       (37,124)
Balance at Dec. 31, 2011 22,924,411 229,244 784,213,871 928,744 165,906 (1,552,382) (754,783,812) 29,035,665
Public offering common stock, net 14,950,000 149,500 15,640,770         15,790,270
Net loss attributable to the Company             (31,862,454) (31,862,454)
Other comprehensive income       75,668       75,668
Stock based compensation 530,353 5,304 1,985,850         1,991,154
Balance at Dec. 31, 2012 38,404,764 384,048 801,840,491 1,004,412 165,906 (1,552,382) (786,646,266) 15,030,303
Other comprehensive loss       (106,605)       (106,605)
Net loss attributable to the Company             (62,669,682) (62,669,682)
Other comprehensive loss       $ (106,605)       $ (106,605)
Stock based compensation 2,198,154 21,982 2,127,510         2,149,492
Public Offering, common stock, net (1) 43,101,800 431,018 9,991,406         10,422,424
Exercise of warrants (2) 22,494,987 224,950 17,076,968         17,301,918
Stock dividend 156,853 1,568 119,550       (121,118)  
Balance at Dec. 31, 2013 106,356,558 1,063,566 831,155,925 897,807 165,906 (1,552,382) (849,437,066) (17,872,150)