Minimum fixed charge coverage ratio under the covenant of the debt instrument.

No definition available.

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Namespace Prefix:	sqft_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

The purchase offer price for real estate.

+ References

No definition available.

+ Details

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Namespace Prefix:	sqft_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-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

Reference 2: 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

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-2

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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- Details

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Note 7 - Mortgage Notes Payable (Details Textual) - USD ($)			1 Months Ended	12 Months Ended
	Sep. 06, 2025	Jun. 20, 2024	Jul. 31, 2025	Dec. 31, 2025	Dec. 31, 2024
Impairment of Real Estate				$ 6,371,437	$ 1,784,311
Mortgage Loan on West Fargo Industrial Properties [Member]
Debt Instrument, Term (Year)		5 years
Mortgage Loan on One Park Center [Member]
Debt Instrument, Term (Year)	5 years
Dakota Center [Member]
Real Estate, Purchase Offer Price			$ 5,125,000
Impairment of Real Estate				3,500,000
Shea Center II [Member]
Impairment of Real Estate				2,500,000
Model Home [Member]
Impairment of Real Estate				$ 300,000
Model Home [Member] \| Mortgage Notes [Member]
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio				1.1
Model Home [Member] \| Mortgage Notes [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage				5.94%
Model Home [Member] \| Mortgage Notes [Member] \| Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage				8.00%