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Document and Entity Information
 3 Months Ended
Mar. 31, 2015
Apr. 17, 2015
Document and Entity Information [Abstract]    
Entity Registrant Name STRAYER EDUCATION INC  
Entity Central Index Key 0001013934  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Type 10-Q  
Document Period End Date Mar. 31, 2015  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q1  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   10,973,601dei_EntityCommonStockSharesOutstanding