Cover - shares	9 Months Ended
	Sep. 30, 2025	Nov. 10, 2025
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Amendment Flag	false
Document Period End Date	Sep. 30, 2025
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q3
Entity Information [Line Items]
Entity Registrant Name	LINCOLN EDUCATIONAL SERVICES CORPORATION
Entity Central Index Key	0001286613
Entity File Number	000-51371
Entity Tax Identification Number	57-1150621
Entity Incorporation, State or Country Code	NJ
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Contact Personnel [Line Items]
Entity Address, Address Line One	14 Sylvan Way, Suite A
Entity Address, City or Town	Parsippany
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	07054
Entity Phone Fax Numbers [Line Items]
City Area Code	973
Local Phone Number	736-9340
Entity Listings [Line Items]
Title of 12(b) Security	Common Stock, no par value per share
Trading Symbol	LINC
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		31,623,795