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Funds placed in escrow for the acquisition of a replacement property, as a part of the Section 1031 like-kind exchange.

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Carrying amount as of the balance sheet date of value of below market lease real estate investment asset.

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Carrying amount as of the balance sheet date of value of in place lease real estate investment asset.

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Represents the sale price of land and related assets.

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Area of land held.

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Amount of escrow deposit disbursements related to property acquisition in noncash investing or financing transactions.

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Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Amount before accumulated depreciation and depletion of additions or improvements to real estate held for productive use. Examples include, but are not limited to, walkways, driveways, fences, and parking lots.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Carrying amount as of the balance sheet date of improvements having a life longer than one year that were made for the benefit of one or more tenants.

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Real Estate Assets and Discontinued Operations - Acquisitions and Dispositions (Details) $ in Thousands																		12 Months Ended
	Dec. 31, 2022 USD ($)	Sep. 07, 2022 USD ($) ft² a	Jun. 16, 2022 USD ($) ft² a	Jun. 08, 2022 USD ($) ft² building	Jan. 19, 2022 USD ($) ft²	Dec. 10, 2021 USD ($) ft² a item	Dec. 09, 2021 USD ($) a	Dec. 01, 2021 USD ($) a ft² item	Nov. 16, 2021 USD ($) ft²	Nov. 12, 2021 USD ($) ft²	Nov. 05, 2021 USD ($) a	Oct. 12, 2021 USD ($) ft²	Aug. 05, 2021 USD ($) ft²	Jul. 23, 2021 USD ($) a	Jun. 28, 2021 USD ($) ft²	May 12, 2021 USD ($) ft²	Apr. 13, 2021 USD ($) a ft² building	Dec. 31, 2021 USD ($) ft²
Real Estate Properties [Line Items]
Land	$ 71,148																	$ 55,104
Land improvements	78,974																	65,520
Buildings and improvements	379,864																	295,964
Tenant improvements	32,753																	31,576
Real estate assets, net	489,661																	387,647
Impairment charges																		3,000
2022 Acquisitions
Real Estate Properties [Line Items]
Land	16,051
Land improvements	910
Buildings and improvements	45,421
Tenant improvements	191
Intangible assets	1,488
Intangible liabilities	(648)
Real estate assets, net	63,413
7770 Palmetto
Real Estate Properties [Line Items]
Land																		3,166
Land improvements																		4,182
Buildings and improvements																		20,077
Tenant improvements																		113
Intangible assets																		950
Real estate assets, net																		28,488
Area of building \| ft²										196,500
Cash paid for real estate										$ 28,488
2345 Township
Real Estate Properties [Line Items]
Land																		1,197
Land improvements																		671
Buildings and improvements																		12,337
Tenant improvements																		20
Intangible assets																		710
Real estate assets, net																		14,935
Area of building \| ft²												128,000
Cash paid for real estate												$ 14,935
2850 Interstate
Real Estate Properties [Line Items]
Land																		2,369
Land improvements																		2,832
Buildings and improvements																		12,280
Tenant improvements																		48
Intangible assets																		558
Intangible liabilities																		(228)
Real estate assets, net																		17,859
Area of building \| ft²													139,500
Cash paid for real estate													$ 17,859
7800 Tuckaseegee
Real Estate Properties [Line Items]
Land																		4,606
Land improvements																		3,526
Buildings and improvements																		33,348
Tenant improvements																		200
Intangible assets																		1,462
Intangible liabilities																		(640)
Real estate assets, net																		42,502
Area of building \| ft²															395,500
Cash paid for real estate															$ 42,502
1985 Blue Hills
Real Estate Properties [Line Items]
Area of building \| ft²								165,000
Area of land \| a								39
Number of parcels \| item								2
Sale price of land								$ 18,000
Gain (loss) on sale of assets								$ 13,271
Bloomfield, CT
Real Estate Properties [Line Items]
Area of land \| a														34
Sale price of land														$ 600
Gain (loss) on sale of assets														$ 504
Granby and East Granby, Connecticut
Real Estate Properties [Line Items]
Area of land \| a							670
Sale price of land							$ 10,300
Gain (loss) on sale of assets							9,331
Proceeds from land sale deposited in escrow							$ 10,091
Quincy, Florida
Real Estate Properties [Line Items]
Area of land \| a											1,066
Sale price of land											$ 1,000
Gain (loss) on sale of assets											$ 430
6355 Farm Bureau
Real Estate Properties [Line Items]
Land																		2,163
Land improvements																		388
Buildings and improvements																		10,036
Tenant improvements																		132
Intangible assets																		918
Intangible liabilities																		(1,709)
Real estate assets, net																		11,928
Area of building \| ft²																127,500
Cash paid for real estate																$ 11,928
Allentown, Pennsylvania
Real Estate Properties [Line Items]
Area of building \| ft²		91,000				206,000
Cash paid for real estate		$ 6,614				$ 4,229
Area of land \| a		8				23
Number of parcels \| item						2
Landstar Land
Real Estate Properties [Line Items]
Land																		5,658
Real estate assets, net																		5,658
Cash paid for real estate																	$ 5,658
Area of land \| a																	14
Escrow deposit disbursements related to property acquisition																	$ 1,993
Number of planned development buildings \| building																	2
Area of land to be acquired \| ft²																	196,000
American Pkwy Land
Real Estate Properties [Line Items]
Land																		4,229
Real estate assets, net																		$ 4,229
Office Or Flex Buildings
Real Estate Properties [Line Items]
Area of building \| ft²									48,000
5 and 7 Waterside Crossing
Real Estate Properties [Line Items]
Area of building \| ft²																		161,000
Sale price of land									$ 5,200
Gain (loss) on sale of assets									$ (158)
Impairment charges																		$ 3,000
782 Paragon Way
Real Estate Properties [Line Items]
Land	1,469
Land improvements	329
Buildings and improvements	22,228
Real estate assets, net	24,026
Cash paid for real estate					$ 24,026
Area of land \| ft²					217,000
Cash received on sale of land					$ 10,091
3312 Shader Road
Real Estate Properties [Line Items]
Land	2,828
Land improvements	213
Buildings and improvements	11,179
Tenant improvements	107
Intangible assets	684
Intangible liabilities	(186)
Real estate assets, net	14,825
6600 High Ridge Road
Real Estate Properties [Line Items]
Land	1,673
Land improvements	194
Buildings and improvements	6,318
Tenant improvements	44
Intangible assets	421
Real estate assets, net	8,650
7700 High Ridge Road
Real Estate Properties [Line Items]
Land	2,346
Land improvements	174
Buildings and improvements	5,696
Tenant improvements	40
Intangible assets	383
Intangible liabilities	(462)
Real estate assets, net	8,177
Rock Hill, SC Land
Real Estate Properties [Line Items]
Land	1,121
Real estate assets, net	1,121
Area of building \| ft²			231,000
Cash paid for real estate	9,800		$ 1,121
Area of land \| a			32
Allentown, PA Land
Real Estate Properties [Line Items]
Land	6,614
Real estate assets, net	$ 6,614
2021 Acquisitions
Real Estate Properties [Line Items]
Land																		23,388
Land improvements																		11,599
Buildings and improvements																		88,078
Tenant improvements																		513
Intangible assets																		4,598
Intangible liabilities																		(2,577)
Real estate assets, net																		$ 125,599
Palm Beach Property [Member]
Real Estate Properties [Line Items]
Area of land \| ft²				84,000
Palm Beach And Orlando Property [Member]
Real Estate Properties [Line Items]
Cash paid for real estate				$ 31,652
Number of buildings comprised \| building				2
Area of land \| ft²				205,000
Orlando Property [Member]
Real Estate Properties [Line Items]
Area of land \| ft²				121,000