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GOODWILL (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Goodwill [Roll Forward]    
Goodwill, beginning balance $ 266,345,000  
Acquisitions 22,188,000  
Goodwill, ending balance 288,533,000 $ 266,345,000
Goodwill, impairment charges $ 0 $ 0