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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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