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Note 3 - Recent Real Estate Transactions (Details Textual)										1 Months Ended	12 Months Ended
	Dec. 22, 2021 USD ($) ft²	Aug. 17, 2021 USD ($) ft²	May 21, 2021 USD ($)	May 20, 2021 USD ($)	Feb. 19, 2021 USD ($)	Jan. 28, 2021 USD ($)	Dec. 02, 2020 USD ($)	Mar. 13, 2020 USD ($)	Feb. 05, 2020 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Notes Payable, Total										$ 7,500,086	$ 0	$ 7,500,086
Discontinued Operations, Disposed of by Sale [Member]
Number of Real Estate Properties										46	44	46
Proceeds from Sale of Real Estate, Total										$ 18,100,000	$ 20,700,000
Gain (Loss) on Sale of Properties										$ 1,600,000	$ 3,200,000
Mandolin [Member]
Area of Real Estate Property (Square Foot) | ft²		10,500
Payments to Acquire Buildings		$ 4,900,000
Property Under Triple Net Lease, Percent Occupied		100.00%
Property under Triple Net Lease, Term (Year)		15 years
Baltimore [Member]
Area of Real Estate Property (Square Foot) | ft²	31,752
Payments to Acquire Buildings	$ 8,900,000
Property Under Triple Net Lease, Percent Occupied	100.00%
Property under Triple Net Lease, Term (Year)	5 years
Model Home [Member]
Number of Real Estate Properties										28	18	28
Payments to Acquire Residential Real Estate											$ 8,400,000	$ 10,200,000
Real Estate Property, Consideration Transferred, Total											2,700,000	3,100,000
Notes Payable, Total										$ 7,100,000	$ 5,700,000	$ 7,100,000
Waterman Plaza [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate, Total						$ 3,500,000
Gain (Loss) on Sale of Properties						$ (200,000)
Garden Gateway [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate, Total					$ 11,200,000
Gain (Loss) on Sale of Properties					$ (1,400,000)
Highland Court [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate, Total				$ 10,200,000
Gain (Loss) on Sale of Properties				$ (1,600,000)
Executive Office Park [Member] | Discontinued Operations, Disposed of by Sale [Member]
Number of Real Estate Properties							4
Proceeds from Sale of Real Estate, Total			$ 8,100,000				$ 2,300,000
Gain (Loss) on Sale of Properties			$ 2,500,000				$ (75,000)
Centennial Tech Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate, Total									$ 15,000,000.0
Gain (Loss) on Sale of Properties									$ (913,000)
Union Terrace [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate, Total								$ 11,300,000
Gain (Loss) on Sale of Properties								$ 688,000
NetREIT Palm Self Storage, LP and NetREIT Highland LLC [Member]
Noncontrolling Interest, Ownership Percentage by Parent		61.30%

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- Definition

Represents the occupancy percentage for a property under triple net lease.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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

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