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BUSINESS COMBINATIONS (Estimated Fair Values of Assets Acquired and Liabilities Assumed) (Detail) - USD ($) $ in Thousands | Sep. 30, 2017 | Jun. 30, 2017 | Sep. 30, 2016 | Jul. 02, 2016
--- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |
Goodwill | $ 860,865 | $ 851,282 | $ 854,188 |
Association Of Certified Anti-Money Laundering Specialists [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Current Assets |  |  |  | $ 24,895
Property and Equipment |  |  |  | 432
Other Long-term Assets |  |  |  | 3,131
Intangible Assets |  |  |  | 88,600
Goodwill |  |  |  | 274,689
Total Assets Acquired |  |  |  | 391,747
Liabilities Assumed |  |  |  | 37,619
Net Assets Acquired |  |  |  | $ 354,128

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