LONG-TERM DEBT (Mortgage Notes Payable) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Mortgages
Debt Instrument [Line Items]
Long-term debt, gross	$ 100.5	$ 132.2

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.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant