Weighted average amortization period of finite-lived intangible liabilities acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

INCOME PROPERTIES (Details)		3 Months Ended
INCOME PROPERTIES (Details)	Mar. 26, 2018 USD ($) property	Mar. 31, 2019 USD ($) ft² building property	Mar. 31, 2018 USD ($) property	Feb. 21, 2019 USD ($) ft²	Dec. 31, 2018 property
Acquisitions of Income Properties
Number of real estate properties \| property		0			4
Number of properties in the disposal group \| property			4
Real Estate Operations
Acquisitions of Income Properties
Payments to Acquire Commercial Real Estate			$ 28,000,000
Aggregate acquisition cost including capitalized acquisition costs			$ 29,000,000
Amount allocated of total acquisition cost
Weighted average amortization period of intangible assets			20 years
Weighted average amortization period of intangible liabilities			20 years
Real Estate Operations \| Nonrecurring basis
Acquisitions of Income Properties
Land			$ 12,000,000
Buildings and improvements			15,000,000
Intangible assets pertaining to the in-place lease value, leasing fees and above market lease value			2,800,000
Intangible liabilities for below market lease value			$ 800,000
Single-tenant
Acquisitions of Income Properties
Number of real estate properties \| property			1
Assets Held for Sale \| Multi-tenant
Acquisitions of Income Properties
Number of properties in the disposal group \| property		1
Concierge Office Building
Acquisitions of Income Properties
Area of real estate property \| ft²		22,012
Williamson Business Park office building
Acquisitions of Income Properties
Area of real estate property \| ft²		15,360
Gain on Sale		$ 3,700,000
Gain on sale of properties (in dollars per share)		$ 0.49
Area of real estate property leased \| ft²		7,600
Lease term		5 years
Mason Commerce Center
Acquisitions of Income Properties
Area of real estate property \| ft²		30,720
Number of office building \| building		2
Daytona Beach, FL
Acquisitions of Income Properties
Sales price	$ 11,400,000
Daytona Beach, FL \| Multi-tenant
Acquisitions of Income Properties
Number of properties in the disposal group \| property	4
Sarasota, FL \| Whole Foods \| Sold
Acquisitions of Income Properties
Sales price				$ 24,620,000
Area of real estate property \| ft²				59,000
Gain on Sale		$ 6,900,000
Gain on sale of properties (in dollars per share)		$ 0.96
Jacksonville, FL \| Single-tenant
Acquisitions of Income Properties
Number of real estate properties \| property		8