Area of a real estate leased property.

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Fair value portion of below market lease intangible liabilities.

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Fair value portion of buildings and improvements.

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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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Fair value portion of land.

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The number of income properties sold.

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Number of properties sold.

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The aggregate of cash outflow from the acquisition of property as primarily intended to generate income for its owner and acquisition-related costs.

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Area of a real estate property.

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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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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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Fair value portion of assets, excluding financial assets, that lack physical substance, having a limited useful life.

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Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.

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Amount of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

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

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The cash outflow from the acquisition of property as primarily intended to generate income for its owner.

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Number of new stock issued during the period.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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INCOME PROPERTIES AND LEASES - General Information (Details)		3 Months Ended
	Nov. 26, 2019 shares	Mar. 31, 2020 USD ($) ft² property	Mar. 31, 2019 USD ($) property	Feb. 21, 2019 USD ($) a	Dec. 31, 2018 property
Acquisitions of Income Properties
Payments to Acquire Commercial Real Estate		$ 137,235,000
Stock Issuance		$ 241,141	$ 272,131
Area of real estate property \| ft²		522,681
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate		$ 39,658,204
Aggregate outstanding principal balance		$ 41,445,000
Number of income properties sold \| property		2
2020 dispositions
Acquisitions of Income Properties
Number of income properties sold \| property		0
2020 dispositions \| Multi-tenant
Acquisitions of Income Properties
Number of real estate properties \| property		2
2019 dispositions
Acquisitions of Income Properties
Number of income properties sold \| property			0
Carpenter Hotel-400 Josephine Street, Austin, TX
Acquisitions of Income Properties
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate		$ 16,539,509
Aggregate outstanding principal balance		16,250,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| 2019 dispositions \| Multi-tenant
Acquisitions of Income Properties
Number of properties sold \| property					1
2020 acquisitions of income property subject to lease
Acquisitions of Income Properties
Payments to Acquire Commercial Real Estate		137,200,000
Aggregate acquisition cost including capitalized acquisition costs		$ 137,700,000
2020 acquisitions of income property subject to lease \| Multi-tenant
Acquisitions of Income Properties
Number of real estate properties \| property		2
2020 acquisitions of income property subject to lease \| Nonrecurring basis
Acquisitions of Income Properties
Land		$ 46,700,000
Buildings and improvements		74,000,000
Intangible assets pertaining to the in-place lease value, leasing fees and above market lease value		18,800,000
Intangible liabilities for below market lease value		$ 1,800,000
Alpine
Acquisitions of Income Properties
Units issued \| shares	2,040,000
Percentage of investment in PINE	22.50%	22.50%
Alpine \| OP Units
Acquisitions of Income Properties
Units issued \| shares	1,223,854
2018 acquisitions of income property subject to a lease \| Multi-tenant
Acquisitions of Income Properties
Number of real estate properties \| property		2
Whole Foods \| Sarasota, FL \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Acquisitions of Income Properties
Sales price				$ 24,620,000
Gain on sale of properties (in dollars per share)		$ 0.96
Area of real estate property \| a				59,000
Gain on Sale		$ 6,900,000
Whole Foods \| Jacksonville, FL \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Single-tenant
Acquisitions of Income Properties
Area of real estate property leased \| property		8