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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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Number of pending claims pertaining to a loss contingency.

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Amount of noncurrent assets classified as other.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Contingencies (Details) $ in Thousands, £ in Millions	Mar. 31, 2018 USD ($) claim program_review	Mar. 31, 2018 GBP (£) claim program_review	Dec. 31, 2017 USD ($)
Loss Contingencies [Line Items]
Number of existing legal claims or proceedings that are likely to have a material effect on the Company's business \| claim	0	0
Deferred Charges and Other Assets \| $	$ 123,627		$ 102,046
Maximum [Member]
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss \| $	$ 30,000
Education [Member] \| Sale of KHE Campuses business [Member] \| Higher Education [Member]
Loss Contingencies [Line Items]
Number of pending program reviews \| program_review	2	2
Her Majesty's Revenue and Customs (HMRC) [Member] \| UK Pathways [Member] \| Kaplan International [Member]
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss \| £		£ 12.0
Deferred Charges and Other Assets \| £		£ 12.0