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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Disaggregate revenue) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 284,190	$ 293,143
Higher Education [Member]
Disaggregation of Revenue [Line Items]
Revenues	245,014	248,515
Test Preparation [Member]
Disaggregation of Revenue [Line Items]
Revenues	23,105	25,124
Certifications [Member]
Disaggregation of Revenue [Line Items]
Revenues	8,214	8,859
Conferences/Seminars [Member]
Disaggregation of Revenue [Line Items]
Revenues	2,868	7,368
Memberships/Subscriptions [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,936	3,015
Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,053	262
Medical And Healthcare [Member]
Disaggregation of Revenue [Line Items]
Revenues	202,100	191,285
Medical And Healthcare [Member] | Higher Education [Member]
Disaggregation of Revenue [Line Items]
Revenues	201,173	191,285
Medical And Healthcare [Member] | Test Preparation [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Medical And Healthcare [Member] | Certifications [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Medical And Healthcare [Member] | Conferences/Seminars [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Medical And Healthcare [Member] | Memberships/Subscriptions [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Medical And Healthcare [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	927	0
Professional Education [Member]
Disaggregation of Revenue [Line Items]
Revenues	35,646	40,042
Professional Education [Member] | Higher Education [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Professional Education [Member] | Test Preparation [Member]
Disaggregation of Revenue [Line Items]
Revenues	20,502	20,538
Professional Education [Member] | Certifications [Member]
Disaggregation of Revenue [Line Items]
Revenues	8,214	8,859
Professional Education [Member] | Conferences/Seminars [Member]
Disaggregation of Revenue [Line Items]
Revenues	2,868	7,368
Professional Education [Member] | Memberships/Subscriptions [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,936	3,015
Professional Education [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	126	262
Technology And Business [Member]
Disaggregation of Revenue [Line Items]
Revenues	47,251	62,439
Technology And Business [Member] | Higher Education [Member]
Disaggregation of Revenue [Line Items]
Revenues	43,841	57,230
Technology And Business [Member] | Test Preparation [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,410	5,209
Technology And Business [Member] | Certifications [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Technology And Business [Member] | Conferences/Seminars [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Technology And Business [Member] | Memberships/Subscriptions [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Technology And Business [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Home Office And Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	(807)	(623)
Home Office And Other [Member] | Higher Education [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Home Office And Other [Member] | Test Preparation [Member]
Disaggregation of Revenue [Line Items]
Revenues	(807)	(623)
Home Office And Other [Member] | Certifications [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Home Office And Other [Member] | Conferences/Seminars [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Home Office And Other [Member] | Memberships/Subscriptions [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Home Office And Other [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ 0

X

- Definition

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

No definition available.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

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