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Nominal or face amount used to calculate payments on the derivative asset.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fixed interest rate related to the interest rate derivative.

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Nominal or face amount used to calculate payments on the derivative liability.

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The net amount of operating interest income (expense).

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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Summary of the Notional Amount and Fair Value of Derivatives) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Jun. 30, 2020	May 01, 2020	Jun. 27, 2019	Sep. 21, 2018	Sep. 18, 2018
Fair value of derivative instruments
Total fair value derivative liabilities	$ (40,135,000)	$ (77,737,000)
Construction Loans \| 8770 New Trails
Fair value of derivative instruments
Loan amount				$ 35,500,000
Interest rate cap \| Derivative instruments not designated as hedging instruments \| Prepaid expenses and other assets, net \| Fixed Interest Rate 2.50%, Maturing December 2019
Fair value of derivative instruments
Notional amount		$ 230,000,000
Fixed interest rate		2.50%
Total fair value derivative assets	0	$ 0
Interest (expense) income, net	200,000
Interest rate cap \| Derivative instruments designated as hedging instruments
Fair value of derivative instruments
Notional amount	230,000,000.0
Interest rate cap \| Derivative instruments designated as hedging instruments \| Prepaid expenses and other assets, net \| Fixed Interest Rate 5.0% Maturing August 2019
Fair value of derivative instruments
Notional amount		$ 75,000,000
Fixed interest rate		5.00%
Total fair value derivative assets	0	$ 0
Interest rate collar \| Derivative instruments designated as hedging instruments \| Accounts payable and accrued expenses \| Fixed Interest Rate 2.00% To 3.00%, Maturing May 2020
Fair value of derivative instruments
Notional amount, liability		193,967,000	$ 194,000,000.0
Total fair value derivative liabilities	(182,000)	0
Interest rate collar \| Derivative instruments designated as hedging instruments \| Accounts payable and accrued expenses \| Fixed Interest Rate 2.25% To 3.25%, Maturing May 2021
Fair value of derivative instruments
Notional amount, liability		354,217,000
Total fair value derivative liabilities	(2,074,000)	(5,370,000)
Interest rate collar \| Derivative instruments designated as hedging instruments \| Accounts payable and accrued expenses \| Fixed Interest Rate 2.75% To 3.50%, Maturing April 2022
Fair value of derivative instruments
Notional amount, liability		381,404,000
Total fair value derivative liabilities	(4,578,000)	(9,782,000)
Income taxes on losses (gains) on cash flow hedges \| Derivative instruments designated as hedging instruments \| Accounts payable and accrued expenses \| Fixed Interest Rate 2.96%, Maturing September 2023
Fair value of derivative instruments
Notional amount, liability		$ 615,000,000
Fixed interest rate		2.96%
Total fair value derivative liabilities	(31,187,000)	$ (55,977,000)
Income taxes on losses (gains) on cash flow hedges \| Derivative instruments designated as hedging instruments \| Accounts payable and accrued expenses \| Fixed Interest Rate 4.89% Maturing January 2032
Fair value of derivative instruments
Notional amount, liability		$ 1,810,000
Fixed interest rate		4.89%
Total fair value derivative liabilities	$ (2,114,000)	$ (6,608,000)
Minimum \| Interest rate collar \| Derivative instruments designated as hedging instruments \| Fixed Interest Rate 2.00% To 3.00%, Maturing May 2020
Fair value of derivative instruments
Fixed interest rate		2.00%
Minimum \| Interest rate collar \| Derivative instruments designated as hedging instruments \| Fixed Interest Rate 2.25% To 3.25%, Maturing May 2021
Fair value of derivative instruments
Fixed interest rate		2.25%
Minimum \| Interest rate collar \| Derivative instruments designated as hedging instruments \| Fixed Interest Rate 2.75% To 3.50%, Maturing April 2022
Fair value of derivative instruments
Fixed interest rate		2.75%
Maximum \| Interest rate collar \| Derivative instruments designated as hedging instruments \| Fixed Interest Rate 2.00% To 3.00%, Maturing May 2020
Fair value of derivative instruments
Fixed interest rate		3.00%
Maximum \| Interest rate collar \| Derivative instruments designated as hedging instruments \| Fixed Interest Rate 2.25% To 3.25%, Maturing May 2021
Fair value of derivative instruments
Fixed interest rate		3.25%
Maximum \| Interest rate collar \| Derivative instruments designated as hedging instruments \| Fixed Interest Rate 2.75% To 3.50%, Maturing April 2022
Fair value of derivative instruments
Fixed interest rate		3.50%
$700 Million Loan Maturity September 2023 \| Term Loan
Fair value of derivative instruments
Loan amount					$ 615,000,000.0	$ 615,000,000.0