STUDENT RECEIVABLES, Write-off (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Write-Off's [Abstract]
2024/2023	$ 4,993	$ 2,870	$ 4,043	$ 2,920
2023/2022	5,270	4,626	24,244	18,820
2022/2021	660	587	2,525	2,615
2021/2020	345	162	1,051	547
2020/2019	100	73	397	461
Prior	120	85	345	244
Total	$ 11,488	$ 8,403	$ 32,605	$ 25,607

No definition available.

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- Definition

The write-offs amount of accounts receivable originated more than five years prior to current fiscal year.

+ References

No definition available.

+ Details

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- Definition

The write-offs amount of accounts receivable originated in five years prior to current fiscal year.

+ References

No definition available.

+ Details

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- Definition

The write-offs amount of accounts receivable originated in four years prior to current fiscal year.

+ References

No definition available.

+ Details

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- Definition

The write-offs amount of accounts receivable originated in current fiscal year.

+ References

No definition available.

+ Details

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- Definition

The write-offs amount of accounts receivable originated in three years prior to current fiscal year.

+ References

No definition available.

+ Details

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Namespace Prefix:	linc_
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- Definition

The write-offs amount of accounts receivable originated in fiscal year prior to current fiscal year.

+ References

No definition available.

+ Details

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- Definition

Amount of direct write-downs of accounts receivable charged against the allowance.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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