v2.4.0.6
Document and Entity Information (USD $)
12 Months Ended
Dec. 31, 2011
Feb. 21, 2012
Jun. 30, 2011
Document and Entity Information      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2011    
Trading Symbol ltbr    
Entity Registrant Name LIGHTBRIDGE Corp    
Entity Central Index Key 0001084554    
Current Fiscal Year End Date --12-31    
Entity Filer Category Smaller Reporting Company    
Entity Common Stock, Shares Outstanding   12,427,220  
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well Known Seasoned Issuer No    
Entity Public Float     $ 34,060,297
Document Fiscal Year Focus 2011    
Document Fiscal Period Focus FY