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ACQUISITIONS - SCHEDULE OF BUSINESS ACQUISTIONS (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Business Acquisition [Line Items] |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  |  | $ 76,980
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities |  |  | 25,058
Cash paid for acquisitions |  |  | 51,922
Cash Acquired from Acquisition |  |  | (1,032)
Supplemental cash flow disclosure related to acquisitions: |  |  |
Payments to Acquire Businesses, Net of Cash Acquired | $ 0 | $ 0 | $ 50,890

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