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BASIS OF PRESENTATION (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Reclassification [Line Items]          
Decrease in general and administrative expenses $ (53,526)   $ (64,770) $ (101,431) $ (134,635)
Decrease in other income (loss) $ (1,675)   (12,328) $ (15,143) (19,490)
Revision of Prior Period, Reclassification, Adjustment          
Reclassification [Line Items]          
Decrease in general and administrative expenses   $ 1,800 2,900   10,700
Decrease in other income (loss)   $ 1,800 $ 2,900   $ 10,700