XML 18 R27.htm IDEA: XBRL DOCUMENT v3.20.1

SUBSEQUENT EVENTS (Details) - Subsequent Event - COVID-19 - USD ($) $ in Thousands	Apr. 30, 2020	Apr. 22, 2020
Subsequent Event [Line Items]
Economic injury disaster loan		$ 10
Paycheck protection program loan	$ 462

X

- Definition

Proceeds From Debt Instrument To Be Forgiven

+ References

No definition available.

+ Details

Name:	sqft_ProceedsFromDebtInstrumentToBeForgiven
Namespace Prefix:	sqft_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Proceeds From Notes Payable To Be Forgiven

+ References

No definition available.

+ Details

Name:	sqft_ProceedsFromNotesPayableToBeForgiven
Namespace Prefix:	sqft_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis=sqft_COVID19Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: