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Note 7 - Mortgage Notes Payable (Details Textual) - Model Home [Member]	Mar. 31, 2023
Number of Real Estate Properties Held for Sale	6
Mortgage Notes [Member] | Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	2.50%
Mortgage Notes [Member] | Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage	6.70%

X

- Definition

Represents the number of real estate properties held for sale.

+ References

No definition available.

+ Details

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Namespace Prefix:	sqft_
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Balance Type:	na
Period Type:	instant

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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