Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2018
Mar. 01, 2019
Jun. 30, 2018
Document And Entity Information      
Entity Registrant Name LIGHTBRIDGE Corp    
Entity Central Index Key 0001084554    
Document Type 10-K    
Document Period End Date Dec. 31, 2018    
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 Non-accelerated Filer    
Entity Public Float     $ 28,411,145
Entity Common Stock, Shares Outstanding   34,956,267  
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2018    
Emerging Growth Company false    
Entity Small Business true    
Entity Shell Company false    
Ex Transition Period false