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ACQUISITIONS - SCHEDULE OF PURCHASE PRICE ALLOCATION (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Assets Acquired |  |  |
Goodwill | $ 1,722,603 | $ 1,771,877 | $ 1,730,950
Total assets acquired |  |  | 76,980
Liabilities Assumed |  |  |
Total liabilities assumed |  |  | $ 25,058

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