MORTGAGE AND OTHER INDEBTEDNESS - Schedule of Debt Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Scheduled Principal Payments
2022	$ 3,674
2023	2,600
2024	2,721
2025	2,848
2026	2,981
Thereafter	30,181
Scheduled Principal Payments	45,005
Term Maturities
2022	153,500
2023	191,605
2024	0
2025	0
2026	0
Thereafter	2,480
Term Maturities	347,585
Unsecured Debt
2022	0
2023	295,000
2024	269,635
2025	430,000
2026	605,000
Thereafter	1,100,000
Unsecured Debt	2,699,635
Long-term Debt, Fiscal Year Maturity [Abstract]
2022	157,174
2023	489,205
2024	272,356
2025	432,848
2026	607,981
Thereafter	1,132,661
Gross debt	3,092,225	$ 1,176,076
Debt discounts, premiums and issuance costs, net	58,583
Total debt	$ 3,150,808	$ 1,170,794

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