Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
9 Months Ended
Sep. 30, 2018
Oct. 18, 2018
Document And Entity Information    
Entity Registrant Name LIGHTBRIDGE Corp  
Entity Central Index Key 0001084554  
Document Type 10-Q  
Document Period End Date Sep. 30, 2018  
Amendment Flag false  
Trading Symbol ltbr  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   31,184,228
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2018  
Entity Emerging Growth Company false  
Entity Small Business true