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BASIS OF PRESENTATION (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Reclassification [Line Items]          
Decrease in general and administrative expenses $ (43,882)   $ (44,587) $ (145,313) $ (179,222)
Decrease in other income (loss) $ (16,221)   (3,714) $ (31,364) (23,204)
Revision of Prior Period, Reclassification, Adjustment          
Reclassification [Line Items]          
Decrease in general and administrative expenses   $ 1,800 4,200   14,900
Decrease in other income (loss)   $ 1,800 $ 4,200   $ 14,900