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Note 6 - Other Assets (Details Textual) Pure in Thousands | Dec. 31, 2025 | Dec. 31, 2024
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Number of Publicly Traded REITs in which Common Shares are Owned | 0 | 0
Number of Publicly Traded REITs in which Options are Owned | 0 | 0

X
- Definition Represents the number of publicly traded REITs in which the reporting entity owns common shares as of the specified date. + References No definition available. + Details
Name: | sqft_NumberOfPubliclyTradedREITSsInWhichCommonSharesAreOwned
Namespace Prefix: | sqft_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of publicly traded REITs in which the reporting entity owns options as of the specified date. + References No definition available. + Details
Name: | sqft_NumberOfPubliclyTradedREITsInWhichOptionsAreOwned
Namespace Prefix: | sqft_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant