v3.19.1
Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2018
Mar. 08, 2019
Jun. 29, 2018
Document and Entity Information [Abstract]      
Entity Registrant Name LINCOLN EDUCATIONAL SERVICES CORP    
Entity Central Index Key 0001286613    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Shell Company false    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Ex Transition Period false    
Entity Public Float     $ 40,297,960
Entity Common Stock, Shares Outstanding   25,113,569  
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2018    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY