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Revenue Recognition - Schedule of Previously Reported Balances, Adjustment and Current Reported Balances (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Student receivables, net of allowance for doubtful accounts, current	$ 23,915		$ 18,875
Deferred revenue	$ 30,278		$ 22,897
ASC Topic 606 [Member]
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Student receivables, net of allowance for doubtful accounts, current		$ 25,538
Deferred revenue		29,560
Impact of Modified Retrospective Adoption of ASC 606 [Member] | ASC Topic 606 [Member]
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Student receivables, net of allowance for doubtful accounts, current		6,663
Deferred revenue		$ 6,663

X

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
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The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 13.A.3(b).Q1(c))
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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