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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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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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