v3.8.0.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2018
May 01, 2018
Document And Entity Information    
Entity Registrant Name LIGHTBRIDGE Corp  
Entity Central Index Key 0001084554  
Document Type 10-Q  
Document Period End Date Mar. 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 Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   25,151,127
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2018