SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Disaggregate revenue) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 254,613	$ 236,939
Higher Education [Member]
Disaggregation of Revenue [Line Items]
Revenues	201,453	201,173
Test Preparation/Certifications
Disaggregation of Revenue [Line Items]
Revenues	24,972	27,909
Conferences Seminars [Member]
Disaggregation of Revenue [Line Items]
Revenues	17,070	2,868
Memberships Subscriptions [Member]
Disaggregation of Revenue [Line Items]
Revenues	4,867	3,936
Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	6,251	1,053
Medical and Healthcare [Member]
Disaggregation of Revenue [Line Items]
Revenues	207,487	202,100
Medical and Healthcare [Member] | Higher Education [Member]
Disaggregation of Revenue [Line Items]
Revenues	201,453	201,173
Medical and Healthcare [Member] | Test Preparation/Certifications
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	6,034	927
Financial Services
Disaggregation of Revenue [Line Items]
Revenues	47,126	35,646
Financial Services | Higher Education [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Financial Services | Test Preparation/Certifications
Disaggregation of Revenue [Line Items]
Revenues	24,972	28,716
Financial Services | Conferences Seminars [Member]
Disaggregation of Revenue [Line Items]
Revenues	17,070	2,868
Financial Services | Memberships Subscriptions [Member]
Disaggregation of Revenue [Line Items]
Revenues	4,867	3,936
Financial Services | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	217	126
Home Office And Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	(807)
Home Office And Other [Member] | Higher Education [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
Home Office And Other [Member] | Test Preparation/Certifications
Disaggregation of Revenue [Line Items]
Revenues	0	(807)
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