SECURED FINANCING - Future Mortgage Loan Principal Payments (Details) $ in Thousands	Sep. 30, 2020 USD ($)
Debt Disclosure [Abstract]
2020 (remaining)	$ 833
2021	13,197
2022	20,034
2023	28,844
2024	107,929
Later years	342,345
Total	$ 513,182

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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