CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (56,133)us-gaap_NetIncomeLoss	$ (51,286)us-gaap_NetIncomeLoss	$ (37,186)us-gaap_NetIncomeLoss
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	19,338	23,701	26,848
Amortization of deferred finance costs	818us-gaap_AmortizationOfFinancingCosts	474us-gaap_AmortizationOfFinancingCosts	0us-gaap_AmortizationOfFinancingCosts
Deferred income taxes	(4,528)linc_DeferredIncomeTaxExpensesBenefits	26,490linc_DeferredIncomeTaxExpensesBenefits	(14,229)linc_DeferredIncomeTaxExpensesBenefits
Loss (gain) on disposition of assets	41us-gaap_GainLossOnDispositionOfAssets	(506)us-gaap_GainLossOnDispositionOfAssets	(71)us-gaap_GainLossOnDispositionOfAssets
Impairment of goodwill and long-lived assets	42,958	6,194	43,364
Fixed asset donation	(92)	(37)	0
Provision for doubtful accounts	15,500us-gaap_ProvisionForDoubtfulAccounts	15,532us-gaap_ProvisionForDoubtfulAccounts	21,056us-gaap_ProvisionForDoubtfulAccounts
Stock-based compensation expense	2,621us-gaap_ShareBasedCompensation	2,995us-gaap_ShareBasedCompensation	4,340us-gaap_ShareBasedCompensation
Deferred rent	(740)linc_DeferredRentExpense	(888)linc_DeferredRentExpense	421linc_DeferredRentExpense
(Increase) decrease in assets, net of acquisition of business:
Accounts receivable	(14,470)	(15,049)	(19,202)
Inventories	372us-gaap_IncreaseDecreaseInInventories	408us-gaap_IncreaseDecreaseInInventories	421us-gaap_IncreaseDecreaseInInventories
Prepaid income taxes and income taxes receivable	7,638	(1,432)	4,053
Prepaid expenses and current assets	(986)	(106)	(1,274)
Other assets	231	(1,177)	999
Increase (decrease) in liabilities, net of acquisition of business:
Accounts payable	(2,732)	1,461	(2,180)
Accrued expenses	3,806	829	(1,688)
Pension plan liabilities	(271)	(672)	(718)
Unearned tuition	(1,190)	(4,453)	(9,466)
Other liabilities	(159)	768	498
Total adjustments	68,155	54,532	53,172
Net cash provided by operating activities	12,022	3,246	15,986
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(7,472)	(6,538)	(8,839)
Proceeds from sale of property and equipment	67	750	124
Acquisition of business, net of cash acquired	0	0	(1,472)
Net cash used in investing activities	(7,405)	(5,788)	(10,187)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from borrowings	47,500	59,500	37,500
Payments on borrowings	(72,000)us-gaap_RepaymentsOfLongTermDebt	(42,500)us-gaap_RepaymentsOfLongTermDebt	0us-gaap_RepaymentsOfLongTermDebt
Reclassifications of proceeds from borrowings to restricted cash	24,500	(54,500)	0
Payment of deferred finance fees	0us-gaap_PaymentsOfFinancingCosts	(863)us-gaap_PaymentsOfFinancingCosts	(659)us-gaap_PaymentsOfFinancingCosts
Net share settlement for equity-based compensation	(448)	(797)	(531)
Dividends paid	(4,321)us-gaap_PaymentsOfDividendsCommonStock	(6,709)us-gaap_PaymentsOfDividendsCommonStock	(6,444)us-gaap_PaymentsOfDividendsCommonStock
Principal payments under capital lease obligations	(435)	(411)	(481)
Net cash (used in) provided by financing activities	(5,204)	(46,280)	29,385
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(587)	(48,822)	35,184
CASH AND CASH EQUIVALENTS-Beginning of year	12,886	61,708	26,524
CASH AND CASH EQUIVALENTS-End of year	12,299	12,886	61,708
Cash paid during the year for:
Interest	4,597us-gaap_InterestPaid	4,209us-gaap_InterestPaid	4,184us-gaap_InterestPaid
Income taxes	145us-gaap_IncomeTaxesPaid	410us-gaap_IncomeTaxesPaid	226us-gaap_IncomeTaxesPaid
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Liabilities accrued for or noncash purchases of fixed assets	$ 1,613us-gaap_LiabilitiesAssumed1	$ 93us-gaap_LiabilitiesAssumed1	$ 1,789us-gaap_LiabilitiesAssumed1

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow associated with security instrument that either represents a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes proceeds from (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c).

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The net cash inflow or outflow from cash and cash items that are not available for withdrawal or usage.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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Amount of reclassification, impairment, donation, or other change to long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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