STUDENT RECEIVABLES, Write-off (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Write-Off's [Abstract]
2024/2023	$ 0	$ 0	$ 0	$ 0
2023/2022	10,171	7,916	18,024	14,246
2022/2021	744	939	1,865	2,027
2021/2020	273	210	707	385
2020/2019	143	178	298	387
Prior	102	96	223	159
Total	$ 11,433	$ 9,339	$ 21,117	$ 17,204

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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Namespace Prefix:	linc_
Data Type:	xbrli:monetaryItemType
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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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Data Type:	xbrli:monetaryItemType
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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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Namespace Prefix:	linc_
Data Type:	xbrli:monetaryItemType
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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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Namespace Prefix:	linc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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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_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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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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