XML 49 R33.htm IDEA: XBRL DOCUMENT v3.21.2

RECENT REAL ESTATE TRANSACTIONS (Details Narrative)														1 Months Ended	9 Months Ended		12 Months Ended
	Aug. 17, 2021 USD ($) ft²	May 21, 2021 USD ($)	May 20, 2021 USD ($)	Feb. 19, 2021 USD ($)	Jan. 28, 2021 USD ($)	Dec. 02, 2020 USD ($)	Mar. 13, 2020 USD ($)	Mar. 13, 2020 USD ($)	Feb. 05, 2020 USD ($)	Feb. 05, 2020 USD ($)	Jul. 02, 2019 USD ($)	May 08, 2019 USD ($)	Jan. 15, 2019 USD ($)	Jul. 31, 2019 USD ($)	Sep. 30, 2021 USD ($) Integer	Sep. 30, 2020 USD ($) Integer	Dec. 31, 2020 USD ($) Integer	Dec. 31, 2019 USD ($) Integer
Notes Payable																	$ 7,500,086	$ 12,238,692
NetREIT Palm Self-Storage LP [Member]
Noncontrolling interest, ownership percentage by parent															61.30%
Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate															$ 19,000,000.0	$ 12,600,000	18,100,000	14,600,000
Gain (Loss) on Sale of Properties															$ 2,900,000	$ 900,000	$ 1,600,000	$ 1,200,000
Number of Real Estate Properties | Integer															39	33	46	41
Waterman Plaza [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate					$ 3,500,000
Gain (Loss) on Sale of Properties					$ 200,000
Garden Gateway [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate				$ 11,200,000
Gain (Loss) on Sale of Properties				$ 1,400,000
Highland Court [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate			$ 10,200,000
Gain (Loss) on Sale of Properties			$ 1,600,000
Executive Office Park [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate		$ 8,100,000				$ 2,300,000
Gain (Loss) on Sale of Properties		$ 2,500,000				$ 78,000
Mandolin [Member]
Area of real estate property (square foot) | ft²	10,500
Payments to acquire buildings	$ 4,900,000
Property under triple net lease, percent occupied	100.00%
Property under triple net lease, term (Year)	15 years
Model Home [Member]
Real Estate Property, Consideration Transferred															$ 2,900,000	$ 9,000,000.0	$ 10,200,000	$ 13,000,000.0
Payments to Acquire Residential Real Estate															900,000	$ 2,700,000	$ 3,100,000	$ 3,900,000
Number of Real Estate Properties | Integer																25	28	33
Model Home [Member] | Mortgage Notes [Member]
Notes Payable															$ 2,000,000.0	$ 6,300,000	$ 7,100,000	$ 9,100,000
Centennial Tech Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate										$ 15,000,000.0
Gain (Loss) on Sale of Properties									$ 900,000	$ 900,000
Union Terrace [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate							$ 11,300,000	$ 11,300,000
Gain (Loss) on Sale of Properties							$ 700,000	$ 690,000
Morena Office Center [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate													$ 5,600,000
Gain (Loss) on Sale of Properties													$ 700,000
Nightingale Land [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate												$ 900,000
Gain (Loss) on Sale of Properties												$ 93,000
Genesis Plaza [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate											$ 2,900,000
Sale of Percentage Interest in Real Estate Property											43.00%
Sale of Real Estate Property											$ 5,600,000
The Presidio [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale of Real Estate														$ 12,300,000
Gain (Loss) on Sale of Properties														$ 4,500,000

X

- Definition

Represents the occupancy percentage for a property under triple net lease.

+ References

No definition available.

+ Details

Name:	SQFT_PropertyUnderTripleNetLeasePercentOccupied
Namespace Prefix:	SQFT_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the term of a triple net lease for a property.

+ References

No definition available.

+ Details

Name:	SQFT_PropertyUnderTripleNetLeaseTerm
Namespace Prefix:	SQFT_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of consideration transferred for the purchase of real estate.

+ References

No definition available.

+ Details

Name:	SQFT_RealEstatePropertyConsiderationTransferredTotal
Namespace Prefix:	SQFT_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of real estate property sold.

+ References

No definition available.

+ Details

Name:	SQFT_SaleOfRealEstateProperty
Namespace Prefix:	SQFT_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Sales of percentage interest in real estate property.

+ References

No definition available.

+ Details

Name:	SQFT_SalesOfPercentageInterestInRealEstateProperty
Namespace Prefix:	SQFT_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

X

- 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2443-110228

+ Details

Name:	us-gaap_GainLossOnSaleOfProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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

X

- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

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

X

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The cash outflow for acquisition of buildings (properties) whether for investment or use.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireBuildings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The cash outflow from the acquisition of residential property intended to generate income for the owner.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireResidentialRealEstate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Cash received for the sale of real estate that is not part of an investing activity during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585

+ Details

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

X

- Details

Name:	srt_OwnershipAxis=SQFT_NetREITPalmSelfStorageLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsDisposedOfBySaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=SQFT_WatermanPlazaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=SQFT_GardenGatewayMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=SQFT_HighlandCourtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=SQFT_ExecutiveOfficeParkMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=SQFT_MandolinMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=SQFT_ModelHomeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=SQFT_MortgageNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=SQFT_CentennialTechCenterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=SQFT_UnionTerraceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=SQFT_MorenaOfficeCenterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=SQFT_NightingaleLandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=SQFT_GenesisPlazaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=SQFT_ThePresidioMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: