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Revenues (Disaggregate revenue) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | $ 271,487 | $ 258,703 | $ 792,272 | $ 749,603
Higher Education [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 222,019 | 217,423 | 637,625 | 630,083
Test Preparation/Certifications |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 26,236 | 26,755 | 78,145 | 81,154
Conferences Seminars [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 11,925 | 3,860 | 42,738 | 17,405
Memberships Subscriptions [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 5,590 | 4,299 | 15,512 | 12,135
Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 5,717 | 6,366 | 18,252 | 8,826
Medical and Healthcare [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 227,344 | 223,575 | 655,011 | 638,302
Medical and Healthcare [Member] | Higher Education [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 222,019 | 217,423 | 637,625 | 630,083
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 | 5,325 | 6,152 | 17,386 | 8,219
Financial Services [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 44,143 | 35,935 | 137,261 | 113,723
Financial Services [Member] | Higher Education [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues |  | 0 |  | 0
Financial Services [Member] | Test Preparation/Certifications |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 26,236 | 27,562 | 78,145 | 83,576
Financial Services [Member] | Conferences Seminars [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 11,925 | 3,860 | 42,738 | 17,405
Financial Services [Member] | Memberships Subscriptions [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 5,590 | 4,299 | 15,512 | 12,135
Financial Services [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | $ 392 | 214 | 866 | 607
Home Office And Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues |  | (807) | $ 0 | (2,422)
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 |  | (807) |  | (2,422)
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

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