v2.4.0.8
Document and Entity Information
6 Months Ended
Jun. 30, 2013
Jul. 25, 2013
Document and Entity Information [Abstract]    
Entity Registrant Name PROASSURANCE CORP  
Entity Central Index Key 0001127703  
Document Type 10-Q  
Document Period End Date Jun. 30, 2013  
Amendment Flag false  
Document Fiscal Year Focus 2013  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   61,848,617
Entity Well-known Seasoned Issuer Yes  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes