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BUSINESS ACQUISITIONS AND DIVESTITURE - Pro Forma Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2017
Business Combinations [Abstract]    
Total revenue $ 352,351 $ 1,059,889
Net income $ 1,385 $ 24,064
Basic income per share (in dollars per share) $ 0.02 $ 0.32