Name:	linc_DeferredTaxAssetsFinanceLeaseRightOfUseAssets
Namespace Prefix:	linc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount before allocation of valuation allowances of deferred tax asset (liability) attributable to deductible temporary differences from pension benefits.

No definition available.

Name:	linc_DeferredTaxAssetsLiabilitiesTaxDeferredExpenseCompensationAndBenefitsPensions
Namespace Prefix:	linc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Non-current portion of deferred tax asset attributable to deductible temporary differences from depreciation and amortization.

No definition available.

Name:	linc_DeferredTaxAssetsNonCurrentDepreciationAndAmortization
Namespace Prefix:	linc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Non-current portion of deferred tax asset attributable to deductible temporary differences from other intangibles.

No definition available.

Name:	linc_DeferredTaxAssetsNonCurrentOtherIntangibles
Namespace Prefix:	linc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from operating lease right to use underlying asset.

No definition available.

Name:	linc_DeferredTaxAssetsOperatingLeaseRightOfUseAssets
Namespace Prefix:	linc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of deferred tax liability attributable to taxable temporary differences from present value of lessee's discounted obligation for lease payments from finance lease.

No definition available.

Name:	linc_DeferredTaxLiabilitiesFinanceObligationLiability
Namespace Prefix:	linc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of deferred tax liability attributable to taxable temporary differences from operating lease liability.

No definition available.

Name:	linc_DeferredTaxLiabilitiesOperatingLeaseLiability
Namespace Prefix:	linc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-6

Name:	us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

Name:	us-gaap_DeferredTaxAssetsGrossAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

Name:	us-gaap_DeferredTaxAssetsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

Name:	us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

Name:	us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.

Name:	us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from allowance for credit loss on accounts receivable.