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REAL ESTATE ACQUISITIONS - Summary of acquisitions (Details) - Real Estate Acquisitions in 2021 $ in Thousands			9 Months Ended
	Sep. 29, 2021 USD ($)	May 27, 2021 USD ($) item	Sep. 30, 2021 USD ($)
REAL ESTATE ACQUISITION
Contract Purchase Price			$ 16,355
Capitalized Transaction Costs			$ 136
Pureon, Inc. industrial facility, Monroe, North Carolina
REAL ESTATE ACQUISITION
Contract Purchase Price		$ 7,000
New mortgage debt		$ 4,500
Interest rate (as a percent)		3.25%
Capitalized Transaction Costs		$ 60
Pureon, Inc. industrial facility, Monroe, North Carolina | Market capitalization rate | Valuation, Income Approach | Level 3
REAL ESTATE ACQUISITION
Tangible assets acquired, measurement input | item		0.070
Multi-tenant industrial facility, Lehigh Acres, Florida
REAL ESTATE ACQUISITION
Contract Purchase Price	$ 9,355
New mortgage debt	$ 6,100
Interest rate (as a percent)	3.17%
Capitalized Transaction Costs	$ 76
Multi-tenant industrial facility, Lehigh Acres, Florida | Market capitalization rate | Valuation, Income Approach | Level 3
REAL ESTATE ACQUISITION
Tangible assets acquired, measurement input	0.0675

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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-Publisher FASB
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