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Number of Real Estate Properties Sold

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Proceeds From Sale On Termination Of Lease

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

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Amount of gain (loss) on termination of lease before expiration of lease term.

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The number of businesses acquired by the entity during the period.

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The number of real estate properties owned as of the balance sheet date.

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Cash received for the sale of real estate that is not part of an investing activity during the current period.

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Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

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ACQUISITIONS AND DISPOSITIONS (Details) $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
ACQUISITIONS AND DISPOSITIONS (Details) $ in Thousands	Oct. 25, 2019 USD ($)	Sep. 30, 2019 USD ($) lease property	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) lease property	Sep. 30, 2018 USD ($)	Dec. 31, 2020 USD ($) property	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Number of acquisitions completed by the Company				0
Gain on sale of real estate		$ 39,716	$ 2,185	$ 68,219	$ 52,625
Number of ground lease positions sold \| lease		1		1
Proceeds from sale of ground lease		$ 6,900		$ 6,943	0
Gain on sale of ground lease		1,849	$ 0	1,849	$ 0
Assets held for sale		$ 3,453		$ 3,453				$ 0
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Number of disposed properties \| property		6		8
Aggregate sale price of disposed properties		$ 77,600		$ 111,400
Gain on sale of real estate		39,700		68,200
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations \| Lawnside, NJ \| Prepaid Expenses and Other Assets
Business Acquisition [Line Items]
Assets held for sale		$ 3,500		$ 3,500
Building in Maywood, NJ \| Subsequent Event
Business Acquisition [Line Items]
Purchase price of real estate property acquired	$ 7,100
Retail Outparcel in Paramus, NJ \| Scenario, Forecast
Business Acquisition [Line Items]
Purchase price of real estate property acquired							$ 6,600
Boston Metro Area \| Scenario, Forecast
Business Acquisition [Line Items]
Purchase price of real estate property acquired						$ 24,500
Number of real estate properties \| property						1