CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 10,322us-gaap_NetIncomeLoss	$ 9,424us-gaap_NetIncomeLoss	$ 14,336us-gaap_NetIncomeLoss	$ 12,357us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	5,537	6,173	18,507	20,816
Provision for doubtful accounts	16,830us-gaap_ProvisionForDoubtfulAccounts	14,526us-gaap_ProvisionForDoubtfulAccounts	47,212us-gaap_ProvisionForDoubtfulAccounts	44,755us-gaap_ProvisionForDoubtfulAccounts
Deferred income taxes	25,046us-gaap_DeferredIncomeTaxExpenseBenefit	(6,075)us-gaap_DeferredIncomeTaxExpenseBenefit	23,036us-gaap_DeferredIncomeTaxExpenseBenefit	(19,974)us-gaap_DeferredIncomeTaxExpenseBenefit
Stock-based compensation expense	2,667us-gaap_ShareBasedCompensation	3,304us-gaap_ShareBasedCompensation	7,529us-gaap_ShareBasedCompensation	8,698us-gaap_ShareBasedCompensation
Settlement cost	0esi_PaymentsForSettlementCosts	0esi_PaymentsForSettlementCosts	0esi_PaymentsForSettlementCosts	(46,000)esi_PaymentsForSettlementCosts
Accretion of discount on private education loans	(2,727)	(4,072)	(9,099)	(9,536)
Accretion of discount on PEAKS Trust senior debt	1,788esi_AccretionOfDiscountOnSeniorDebt	1,411esi_AccretionOfDiscountOnSeniorDebt	4,770esi_AccretionOfDiscountOnSeniorDebt	3,444esi_AccretionOfDiscountOnSeniorDebt
Provision for private education loan losses	4,511us-gaap_ProvisionForLoanAndLeaseLosses	16,382us-gaap_ProvisionForLoanAndLeaseLosses	13,582us-gaap_ProvisionForLoanAndLeaseLosses	20,701us-gaap_ProvisionForLoanAndLeaseLosses
(Gain) loss on consolidation of variable interest entities	(16,631)	0	(16,631)	73,248
Other	(250)	257	(678)	622
Changes in operating assets and liabilities, net of acquisition:
Restricted cash	(468)	830	2,400	192
Accounts receivable	(16,480)	(10,275)	(15,498)	(87,503)
Private education loans	4,221	3,434	12,314	8,013
Accounts payable	4,561	(2,542)	22,458	(2,127)
Other operating assets and liabilities	(18,591)	870	(28,021)	(7,163)
Deferred revenue	12,786	17,769	(4,614)	(4,240)
Net cash flows from operating activities	33,122	51,416	91,603	16,303
Cash flows from investing activities:
Facility expenditures	(603)esi_FacilityExpenditures	(81)esi_FacilityExpenditures	(760)esi_FacilityExpenditures	(541)esi_FacilityExpenditures
Capital expenditures, net	(1,195)	(904)	(3,695)	(4,277)
Acquisition of company, net of cash acquired	(153)	(6,953)	(5,186)	(6,953)
Collateralization of letters of credit	(109)esi_CollateralizationOfLettersOfCredit	0esi_CollateralizationOfLettersOfCredit	(109)esi_CollateralizationOfLettersOfCredit	0esi_CollateralizationOfLettersOfCredit
Proceeds from repayment of notes	100	91	293	413
Note advances and purchases of investments	(1)us-gaap_PaymentsToAcquireInvestments	0us-gaap_PaymentsToAcquireInvestments	(2)us-gaap_PaymentsToAcquireInvestments	(1,241)us-gaap_PaymentsToAcquireInvestments
Net cash flows from investing activities	(1,961)	(7,847)	(9,459)	(12,599)
Cash flows from financing activities:
Repayment of revolving borrowings	0	(60,000)	0	(80,000)
Repayment of PEAKS Trust senior debt	(51,706)us-gaap_RepaymentsOfLongTermDebt	(537)us-gaap_RepaymentsOfLongTermDebt	(92,776)us-gaap_RepaymentsOfLongTermDebt	(1,198)us-gaap_RepaymentsOfLongTermDebt
Common shares tendered for taxes	(184)	(19)	(912)	(390)
Net cash flows from financing activities	(51,890)	(60,556)	(93,688)	(81,588)
Net change in cash and cash equivalents	(20,729)	(16,987)	(11,544)	(77,884)
Cash and cash equivalents at beginning of period	224,956	182,568	215,771	243,465
Cash and cash equivalents at end of period	$ 204,227	$ 165,581	$ 204,227	$ 165,581

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The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period.

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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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Amount of expense related to estimated loss from loan and lease transactions.

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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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