v2.4.0.6
Document and Entity Information
3 Months Ended
Mar. 31, 2013
May 10, 2013
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2013  
Document Fiscal Year Focus 2013  
Document Fiscal Period Focus Q1  
Trading Symbol RGLS  
Entity Registrant Name REGULUS THERAPEUTICS INC.  
Entity Central Index Key 0001505512  
Current Fiscal Year End Date --12-31  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   36,007,278