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ACQUISITIONS - SCHEDULE OF BUSINESS ACQUISTIONS (Details) - USD ($)
$ in Thousands
12 Months Ended
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