Consolidated Statements of Changes In Stockholders' Equity (USD $)
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Retained Earnings [Member]
Balance at Dec. 31, 2010 $ 7,854,350 $ 468,975 $ 93,339,506 $ 0 $ (85,954,131)
Balance (in shares) at Dec. 31, 2010   46,897,529      
Share based payments 2,924,089 0 2,924,089 0 0
Issuance of common stock from warrants exercised 1,668,326 14,688 1,653,638 0 0
Issuance of common stock from warrants exercised (in shares)   1,468,775      
Issuance of restricted common stock and restricted common stock units in payment for 2010 executive bonuses 77,500 0 77,500 0 0
Issuance of restricted common stock and restricted common stock units in payment for 2010 executive bonuses (in shares)   0      
Warrant issuances and modifications 1,089,030 0 1,089,030 0 0
Issuance of common stock for prepaid consulting services 565,050 3,158 561,892 0 0
Issuance of common stock for prepaid consulting services (in shares)   315,814      
Net loss (12,518,527) 0 0 0 (12,518,527)
Balance at Dec. 31, 2011 1,659,818 486,821 99,645,655 0 (98,472,658)
Balance (in shares) at Dec. 31, 2011   48,682,118      
Share based payments 1,369,886 0 1,369,886 0 0
Issuance of common stock from warrants exercised 204,000 2,000 202,000 0 0
Issuance of common stock from warrants exercised (in shares)   200,000      
Issuance of common stock for professional services, net of returned shares for amended agreement 175,038 1,742 173,296 0 0
Issuance of common stock for professional services, net of returned shares for amended agreement (in shares)   174,209      
Issuance of common stock and warrants from capital raises, net of issuance costs 13,685,408 191,000 13,494,408 0 0
Issuance of common stock and warrants from capital raises, net of issuance costs (in shares)   19,100,000      
Issuance Of Common Stock From Vested Restricted Stock Units 0 330 (330) 0 0
Issuance Of Common Stock From Vested Restricted Stock (in shares)   32,987      
Net loss (10,121,517) 0 0 0 (10,121,517)
Balance at Dec. 31, 2012 6,972,633 681,893 114,884,915 0 (108,594,175)
Balance (in shares) at Dec. 31, 2012   68,189,314      
Share based payments 1,665,155 0 1,665,155 0 0
Issuance of common stock from warrants exercised 6,032,306 53,029 5,979,277    
Issuance of common stock from warrants exercised (in shares)   5,302,935      
Issuance of common stock and replacement warrants as inducement for warrant exercises 5,017,156 724 5,016,432    
Issuance of common stock and replacement warrants as inducement for warrant exercises (in shares)   72,440      
Issuance of common stock and warrants for professional services, net of forfeited shares 1,506,748 3,329 1,503,419    
Issuance of common stock and warrants for professional services, net of forfeited shares (in shares)   332,848      
Issuance of common stock and warrants from capital raises, net of issuance costs 7,048,822 39,885 7,008,937    
Issuance of common stock and warrants from capital raises, net of issuance costs (in shares)   3,988,494      
Foreign currency translation adjustments 7,241     7,241  
Net loss (19,831,862) 0 0 0 (19,831,862)
Balance at Dec. 31, 2013 $ 8,418,199 $ 778,860 $ 136,058,135 $ 7,241 $ (128,426,037)
Balance (in shares) at Dec. 31, 2013   77,886,031