STUDENT RECEIVABLES, Summary (Details)	3 Months Ended
Mar. 31, 2025
STUDENT RECEIVABLES [Abstract]
Write off period for student receivable balance	150 days

Student receivable balance is written off when deemed uncollectable, which is typically once a student is out of school and there has been no payment activity on their accounts, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter.

No definition available.

Name:	linc_WriteOffPeriodForStudentReceivableBalance
Namespace Prefix:	linc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration