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Note 2 - Significant Accounting Policies (Details Textual) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) shares | Mar. 31, 2021 USD ($) | Sep. 30, 2020 USD ($) shares | Sep. 30, 2021 USD ($) shares | Sep. 30, 2020 USD ($) shares | Dec. 31, 2020 USD ($)
Amortization of above and below Market Leases |  | $ 6,000 |  | $ 26,000 | $ 4,000 | $ 84,000 |
Amortization of Intangible Assets, Total |  | 68,000 |  | 116,000 | 275,000 | 369,000 |
Deferred Costs, Total |  | 1,300,000 |  |  | 1,300,000 |  | $ 1,900,000
Operating Lease, Initial Direct Cost Expense, over Term |  | 85,000 |  | 106,000 | 257,000 | 306,000 |
Cash Equivalents, at Carrying Value, Total |  | 27,800,000 |  |  | 27,800,000 |  | 11,500,000
Restricted Cash, Total |  | $ 3,800,000 |  |  | $ 3,800,000 |  | 4,200,000
Number of Real Estate Properties Held for Sale |  | 1 |  |  | 1 |  |
Unamortized Deferred Stock Costs |  | $ 2,000 |  |  | $ 2,000 |  | 109,000
Real Estate Investment Property and Lease Intangibles, Net |  | 125,888,000 |  |  | 125,888,000 |  | 166,254,000
Impairment of Real Estate |  | $ 0 |  | $ 0 | $ 300,000 | $ 845,674 |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares |  | 401,167 |  | 212,517 | 401,167 | 212,517 |
Series D Preferred Stock [Member] |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs |  |  |  |  | $ 2,500,000 |  |
Class A Common Stock and Related Warrants [Member] |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs |  |  |  |  | $ 1,100,000 |  |
Model Home [Member] |  |  |  |  |  |  |
Number of Real Estate Properties Held for Sale |  | 3 |  |  | 3 |  |
Highland Court [Member] |  |  |  |  |  |  |
Real Estate Investment Property and Lease Intangibles, Net | [1],[2] | $ 0 |  |  | $ 0 |  | 10,500,000
Impairment of Real Estate |  |  | $ 300,000 |  |  |  |
Highland Court [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  |  |  |  |  |  | $ 10,200,000
Maximum [Member] |  |  |  |  |  |  |
Amortization of Value In Place Leases (Year) |  |  |  |  | 10 years |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation (Year) |  |  |  |  | 5 years |  |
Minimum [Member] |  |  |  |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation (Year) |  |  |  |  | 1 year |  |
[1] | A portion of the proceeds from the sale of Highland Court were used in like-kind exchange transactions pursued under Section 1031 of the Internal Revenue for the acquisition of our Mandolin property. Mandolin is owned by NetREIT Palm Self-Storage LP, through its wholly owned subsidiary NetREIT Highland LLC, and the Company is the sole general partner and owns 61.3% of NetREIT Palm Self-Storage LP.
[2] | This property was sold during the nine months ended September 30, 2021.

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