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RELATED-PARTY TRANSACTIONS (Details) - Joint Venture - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Related Party Transaction [Line Items]          
Management fee income $ 0.9 $ 0.7 $ 1.7 $ 1.4  
Due from joint venture 0.4   0.4    
Due to joint ventures $ 1.5   $ 1.5   $ 2.4