Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.8.0.1
Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2017
Mar. 08, 2018
Jun. 30, 2017
Document And Entity Information      
Entity Registrant Name LIGHTBRIDGE Corp    
Entity Central Index Key 0001084554    
Document Type 10-K    
Document Period End Date Dec. 31, 2017    
Amendment Flag false    
Trading Symbol ltbr    
Current Fiscal Year End Date --12-31    
Entity Well Known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Smaller Reporting Company    
Entity Public Float     $ 16,817,767
Entity Common Stock, Shares Outstanding   22,829,365  
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2017