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

Represents the decrease in the floor interest rate of a debt instrument.

+ References

No definition available.

+ Details

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

- Definition

Represents the amount of liquid assets.

+ References

No definition available.

+ Details

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Namespace Prefix:	sqft_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of minimum credit bid for a forclosure sale.

+ References

No definition available.

+ Details

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Namespace Prefix:	sqft_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents number of properties classified as held for sale.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The purchase offer price for real estate.

+ References

No definition available.

+ Details

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

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of noncash consideration received for selling an asset or business through a noncash (or part noncash) transaction.

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Balance Type:	debit
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Balance Type:
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- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
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Balance Type:
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- Details

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Balance Type:
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- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_SheaCenterIIMember
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Balance Type:
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- Details

Name:	us-gaap_DebtInstrumentAxis=sqft_MortgageNotesMember
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- Details

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- Details

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Note 7 - Mortgage Notes Payable (Details Textual)				1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
Note 7 - Mortgage Notes Payable (Details Textual)	Jul. 01, 2026 USD ($)	Apr. 24, 2026 USD ($)	Feb. 13, 2026 USD ($)	Jul. 31, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Impairment of Real Estate					$ 144,688	$ 90,769	$ 220,327	$ 117,712
Gain (Loss) on Sale of Properties					(21,997)	323,359	150,099	564,258
Forclosure of Shea Center II [Member] \| Argentic Services Company LP [Member] \| Subsequent Event [Member]
Minimum Credit Bid	$ 12,000,000
Noncash or Part Noncash Divestiture, Amount of Consideration Received	0
Dakota Center [Member]
Real Estate, Purchase Offer Price				$ 5,125,000
Impairment of Real Estate									$ 3,400,000
Shea Center II [Member]
Impairment of Real Estate	$ 400,000
Gain (Loss) on Sale of Properties			$ (2,400,000)
Shea Center II [Member] \| Mortgage Notes [Member]
Debt Instrument, Face Amount					16,353,296		16,353,296
Model Home Properties [Member]
Impairment of Real Estate					$ 100,000		$ 200,000
Number of Properties Classified as Held for Sale					6		6
Model Home [Member]
Impairment of Real Estate						$ 4,300,000		$ 4,300,000
Model Home [Member] \| Mortgage Notes [Member]
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio					1.1		1.1
Model Home [Member] \| Mortgage Notes [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage					5.92%		5.92%
Model Home [Member] \| Mortgage Notes [Member] \| Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage					8.00%		8.00%
Model Homes-DMH LP 207 [Member]
Liquid Assets		$ 200,000
Model Homes-DMH LP 207 [Member] \| Debt with Origin Bank [Member]
Debt Instrument, Floor Interest Rate, Decrease		0.015