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Document and Entity Information
 9 Months Ended
Sep. 30, 2013
Nov. 14, 2013
Class A Common Stock
Nov. 14, 2013
Class C Common Stock
Entity Registrant Name SECURITY NATIONAL FINANCIAL CORP    
Document Type 10-Q    
Document Period End Date Sep. 30, 2013    
Amendment Flag false    
Entity Central Index Key 0000318673    
Current Fiscal Year End Date --12-31    
Entity Filer Category Smaller Reporting Company    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus Q3    
Entity Common Stock, Shares Outstanding   11,242,385 12,669,983