SEGMENT AND GEOGRAPHICAL INFORMATION - Schedule of Non-Cash Cost of Land and Improved Development (Details) - Real Estate - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Non-Cash Cost of Land and Improved Development	$ 82,008	$ 12,565	$ 23,553
Large Dispositions
Segment Reporting Information [Line Items]
Non-Cash Cost of Land and Improved Development	$ 51,600

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