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ACQUISITIONS (Detail Textual) - USD ($) $ in Thousands | May 31, 2018 | Nov. 22, 2017 | Nov. 01, 2017 | Oct. 01, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
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Business Acquisition [Line Items] |  |  |  |  |  |  |
Goodwill |  |  |  |  | $ 2,620,835 | $ 2,577,435 | $ 2,585,343
Domestic Acquisitions |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisition date | May 31, 2018 | Nov. 22, 2017 |  |  |  |  |
Percentage of membership interests acquired |  | 100.00% |  |  |  |  |
Purchase consideration | $ 24,000 | $ 53,000 |  |  |  |  |
Cash consideration |  | 40,100 |  |  |  |  |
Deferred consideration |  | 4,500 |  |  |  |  |
Contingent consideration |  | 8,700 |  |  |  |  |
Consideration, net working capital adjustment |  | 300 |  |  |  |  |
Goodwill | 8,400 | 26,700 |  |  |  |  |
Identifiable intangible assets | $ 14,900 | $ 24,900 |  |  |  |  |
International Acquisitions |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisition date |  |  | Nov. 01, 2017 | Oct. 01, 2017 |  |  |
Purchase consideration |  |  | $ 7,500 | $ 9,100 |  |  |
Percentage of outstanding shares acquired |  |  | 100.00% | 100.00% |  |  |

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