XML 91 R74.htm IDEA: XBRL DOCUMENT
v3.25.1

Schedule III - Real Estate and Accumulated Depreciation and Amortization - Properties (Details) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Encumbrances |  | $ 102,842,000 |  |  |
Land, Initial Cost |  | 19,639,000 |  |  |
Building and Improvements, Initial Cost |  | 130,879,000 |  |  |
Acquisition Price |  | 150,518,000 |  |  |
Capitalized Improvements |  | 23,280,000 |  |  |
Land Cost, Total Cost |  | 19,639,000 |  |  |
Building & Improvements, Total Cost |  | 154,159,000 |  |  |
Total cost |  | 173,798,000 |  |  |
Accumulated Depreciation & Depreciation |  | 42,359,512 | [1] | $ 39,083,117 | $ 34,803,778
Reserve for Impairment |  | 3,842,000 |  |  |
NBV Real Estate |  | 127,596,000 |  |  |
Industrial Office Properties [Member] |  |  |  |  |
Encumbrances |  | 64,036,000 |  |  |
Land, Initial Cost |  | 9,528,000 |  |  |
Building and Improvements, Initial Cost |  | 82,989,000 |  |  |
Acquisition Price |  | 92,517,000 |  |  |
Capitalized Improvements |  | 22,767,000 |  |  |
Land Cost, Total Cost |  | 9,528,000 |  |  |
Building & Improvements, Total Cost |  | 105,756,000 |  |  |
Total cost |  | 115,284,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 37,196,000 |  |  |
Reserve for Impairment |  | 3,652,000 |  |  |
NBV Real Estate |  | 74,436,000 |  |  |
Industrial Office Properties [Member] | Genesis Plaza [Member] |  |  |  |  |
Encumbrances |  | 5,814,000 |  |  |
Land, Initial Cost |  | 1,400,000 |  |  |
Building and Improvements, Initial Cost |  | 8,600,000 |  |  |
Acquisition Price |  | 10,000,000 |  |  |
Capitalized Improvements |  | 3,490,000 |  |  |
Land Cost, Total Cost |  | 1,400,000 |  |  |
Building & Improvements, Total Cost |  | 12,090,000 |  |  |
Total cost |  | 13,490,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 6,127,000 |  |  |
Reserve for Impairment |  | 0 |  |  |
NBV Real Estate |  | 7,363,000 |  |  |
Industrial Office Properties [Member] | Dakota Center [Member] |  |  |  |  |
Encumbrances |  | 9,091,000 |  |  |
Land, Initial Cost |  | 832,000 |  |  |
Building and Improvements, Initial Cost |  | 8,743,000 |  |  |
Acquisition Price |  | 9,575,000 |  |  |
Capitalized Improvements |  | 4,289,000 |  |  |
Land Cost, Total Cost |  | 832,000 |  |  |
Building & Improvements, Total Cost |  | 13,032,000 |  |  |
Total cost |  | 13,864,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 5,053,000 |  |  |
Reserve for Impairment |  | 656,000 |  |  |
NBV Real Estate |  | 8,155,000 |  |  |
Industrial Office Properties [Member] | Grand Pacific Center [Member] |  |  |  |  |
Encumbrances |  | 6,460,000 |  |  |
Land, Initial Cost |  | 413,000 |  |  |
Building and Improvements, Initial Cost |  | 4,926,000 |  |  |
Acquisition Price |  | 5,339,000 |  |  |
Capitalized Improvements |  | 6,056,000 |  |  |
Land Cost, Total Cost |  | 413,000 |  |  |
Building & Improvements, Total Cost |  | 10,982,000 |  |  |
Total cost |  | 11,395,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 2,981,000 |  |  |
Reserve for Impairment |  | 0 |  |  |
NBV Real Estate |  | 8,414,000 |  |  |
Industrial Office Properties [Member] | Arapahoe Center [Member] |  |  |  |  |
Encumbrances |  | 8,670,000 |  |  |
Land, Initial Cost |  | 1,420,000 |  |  |
Building and Improvements, Initial Cost |  | 10,430,000 |  |  |
Acquisition Price |  | 11,850,000 |  |  |
Capitalized Improvements |  | 1,608,000 |  |  |
Land Cost, Total Cost |  | 1,420,000 |  |  |
Building & Improvements, Total Cost |  | 12,038,000 |  |  |
Total cost |  | 13,458,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 4,160,000 |  |  |
Reserve for Impairment |  | 0 |  |  |
NBV Real Estate |  | 9,298,000 |  |  |
Industrial Office Properties [Member] | West Fargo Industrial [Member] |  |  |  |  |
Encumbrances |  | 5,750,000 |  |  |
Land, Initial Cost |  | 1,693,000 |  |  |
Building and Improvements, Initial Cost |  | 6,207,000 |  |  |
Acquisition Price |  | 7,900,000 |  |  |
Capitalized Improvements |  | 709,000 |  |  |
Land Cost, Total Cost |  | 1,693,000 |  |  |
Building & Improvements, Total Cost |  | 6,916,000 |  |  |
Total cost |  | 8,609,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 2,010,000 |  |  |
Reserve for Impairment |  | 0 |  |  |
NBV Real Estate |  | 6,599,000 |  |  |
Industrial Office Properties [Member] | The 300 N.P [Member] |  |  |  |  |
Encumbrances |  | 0 |  |  |
Land, Initial Cost |  | 135,000 |  |  |
Building and Improvements, Initial Cost |  | 3,715,000 |  |  |
Acquisition Price |  | 3,850,000 |  |  |
Capitalized Improvements |  | 418,000 |  |  |
Land Cost, Total Cost |  | 135,000 |  |  |
Building & Improvements, Total Cost |  | 4,133,000 |  |  |
Total cost |  | 4,268,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 1,275,000 |  |  |
Reserve for Impairment |  | 1,030,000 |  |  |
NBV Real Estate |  | 1,963,000 |  |  |
Industrial Office Properties [Member] | One Park Centre [Member] |  |  |  |  |
Encumbrances |  | 5,920,000 |  |  |
Land, Initial Cost |  | 1,206,000 |  |  |
Building and Improvements, Initial Cost |  | 7,944,000 |  |  |
Acquisition Price |  | 9,150,000 |  |  |
Capitalized Improvements |  | 2,387,000 |  |  |
Land Cost, Total Cost |  | 1,206,000 |  |  |
Building & Improvements, Total Cost |  | 10,331,000 |  |  |
Total cost |  | 11,537,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 3,989,000 |  |  |
Reserve for Impairment |  | 1,966,000 |  |  |
NBV Real Estate |  | 5,582,000 |  |  |
Industrial Office Properties [Member] | Shea Center II [Member] |  |  |  |  |
Encumbrances |  | 16,661,000 |  |  |
Land, Initial Cost |  | 2,214,000 |  |  |
Building and Improvements, Initial Cost |  | 23,747,000 |  |  |
Acquisition Price |  | 25,961,000 |  |  |
Capitalized Improvements |  | 3,782,000 |  |  |
Land Cost, Total Cost |  | 2,214,000 |  |  |
Building & Improvements, Total Cost |  | 27,529,000 |  |  |
Total cost |  | 29,743,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 10,922,000 |  |  |
Reserve for Impairment |  | 0 |  |  |
NBV Real Estate |  | 18,821,000 |  |  |
Industrial Office Properties [Member] | McElderry [Member] |  |  |  |  |
Encumbrances |  | 5,670,000 |  |  |
Land, Initial Cost |  | 215,000 |  |  |
Building and Improvements, Initial Cost |  | 8,677,000 |  |  |
Acquisition Price |  | 8,892,000 |  |  |
Capitalized Improvements |  | 28,000 |  |  |
Land Cost, Total Cost |  | 215,000 |  |  |
Building & Improvements, Total Cost |  | 8,705,000 |  |  |
Total cost |  | 8,920,000 |  |  |
Accumulated Depreciation & Depreciation |  | 679,000 |  |  |
Reserve for Impairment |  |  |  |  |
NBV Real Estate |  | 8,241,000 |  |  |
Industrial Office Properties [Member] | Mandolin [Member] |  |  |  |  |
Total cost |  | 4,907,000 |  |  |
Retail Properties [Member] |  |  |  |  |
Encumbrances |  | 12,745,000 |  |  |
Land, Initial Cost |  | 3,488,000 |  |  |
Building and Improvements, Initial Cost |  | 15,466,000 |  |  |
Acquisition Price |  | 18,954,000 |  |  |
Capitalized Improvements |  | 513,000 |  |  |
Land Cost, Total Cost |  | 3,488,000 |  |  |
Building & Improvements, Total Cost |  | 15,979,000 |  |  |
Total cost |  | 19,467,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 3,722,000 |  |  |
Reserve for Impairment |  | 0 |  |  |
NBV Real Estate |  | 15,745,000 |  |  |
Retail Properties [Member] | Union Town Center [Member] |  |  |  |  |
Encumbrances |  | 7,710,000 |  |  |
Land, Initial Cost |  | 1,750,000 |  |  |
Building and Improvements, Initial Cost |  | 9,462,000 |  |  |
Acquisition Price |  | 11,212,000 |  |  |
Capitalized Improvements |  | 534,000 |  |  |
Land Cost, Total Cost |  | 1,750,000 |  |  |
Building & Improvements, Total Cost |  | 9,996,000 |  |  |
Total cost |  | 11,746,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 2,823,000 |  |  |
Reserve for Impairment |  | 0 |  |  |
NBV Real Estate |  | 8,923,000 |  |  |
Retail Properties [Member] | Research Parkway [Member] |  |  |  |  |
Encumbrances |  | 1,527,000 |  |  |
Land, Initial Cost |  | 408,000 |  |  |
Building and Improvements, Initial Cost |  | 2,442,000 |  |  |
Acquisition Price |  | 2,850,000 |  |  |
Capitalized Improvements |  | (36,000) |  |  |
Land Cost, Total Cost |  | 408,000 |  |  |
Building & Improvements, Total Cost |  | 2,406,000 |  |  |
Total cost |  | 2,814,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 593,000 |  |  |
Reserve for Impairment |  | 0 |  |  |
NBV Real Estate |  | 2,221,000 |  |  |
Retail Properties [Member] | Mandolin [Member] |  |  |  |  |
Encumbrances |  | 3,508,000 |  |  |
Land, Initial Cost |  | 1,330,000 |  |  |
Building and Improvements, Initial Cost |  | 3,562,000 |  |  |
Acquisition Price |  | 4,892,000 |  |  |
Capitalized Improvements |  | 15,000 |  |  |
Land Cost, Total Cost |  | 1,330,000 |  |  |
Building & Improvements, Total Cost |  | 3,577,000 |  |  |
Accumulated Depreciation & Depreciation |  | 306,000 |  |  |
Reserve for Impairment |  | 0 |  |  |
NBV Real Estate |  | 4,601,000 |  |  |
Model Home [Member] |  |  |  |  |
Encumbrances |  | 26,061,000 |  |  |
Land, Initial Cost |  | 6,623,000 |  |  |
Building and Improvements, Initial Cost |  | 32,424,000 |  |  |
Acquisition Price |  | 39,047,000 |  |  |
Land Cost, Total Cost |  | 6,623,000 |  |  |
Building & Improvements, Total Cost |  | 32,424,000 |  |  |
Total cost |  | 39,047,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 1,442,000 |  |  |
Reserve for Impairment |  | 190,000 |  |  |
NBV Real Estate |  | 37,415,000 |  |  |
Model Home [Member] | Model Homes-DMH LP #202 [Member] |  |  |  |  |
Encumbrances |  | 0 |  |  |
Land, Initial Cost |  | 0 |  |  |
Building and Improvements, Initial Cost |  | 0 |  |  |
Acquisition Price |  | 0 |  |  |
Land Cost, Total Cost |  | 0 |  |  |
Building & Improvements, Total Cost |  | 0 |  |  |
Total cost |  | 0 |  |  |
Accumulated Depreciation & Depreciation | [1] | 0 |  |  |
NBV Real Estate |  | 0 |  |  |
Model Home [Member] | Model Homes-DMH LP #203 [Member] |  |  |  |  |
Encumbrances |  | 216,000 |  |  |
Land, Initial Cost |  | 90,000 |  |  |
Building and Improvements, Initial Cost |  | 271,000 |  |  |
Acquisition Price |  | 361,000 |  |  |
Land Cost, Total Cost |  | 90,000 |  |  |
Building & Improvements, Total Cost |  | 271,000 |  |  |
Total cost |  | 361,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 35,000 |  |  |
NBV Real Estate |  | 326,000 |  |  |
Model Home [Member] | Model Homes-DMH LP #204 [Member] |  |  |  |  |
Encumbrances |  | 218,000 |  |  |
Land, Initial Cost |  | 65,000 |  |  |
Building and Improvements, Initial Cost |  | 299,000 |  |  |
Acquisition Price |  | 364,000 |  |  |
Land Cost, Total Cost |  | 65,000 |  |  |
Building & Improvements, Total Cost |  | 299,000 |  |  |
Total cost |  | 364,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 33,000 |  |  |
NBV Real Estate |  | 331,000 |  |  |
Model Home [Member] | Model Homes-DMH LP #205 [Member] |  |  |  |  |
Encumbrances |  | 1,442,000 |  |  |
Land, Initial Cost |  | 407,000 |  |  |
Building and Improvements, Initial Cost |  | 2,004,000 |  |  |
Acquisition Price |  | 2,411,000 |  |  |
Land Cost, Total Cost |  | 407,000 |  |  |
Building & Improvements, Total Cost |  | 2,004,000 |  |  |
Total cost |  | 2,411,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 252,000 |  |  |
NBV Real Estate |  | 2,159,000 |  |  |
Model Home [Member] | Model Homes-DMH LP #206 [Member] |  |  |  |  |
Encumbrances |  | 0 |  |  |
Land, Initial Cost |  | 0 |  |  |
Building and Improvements, Initial Cost |  | 0 |  |  |
Acquisition Price |  | 0 |  |  |
Land Cost, Total Cost |  | 0 |  |  |
Building & Improvements, Total Cost |  | 0 |  |  |
Total cost |  | 0 |  |  |
Accumulated Depreciation & Depreciation | [1] | 0 |  |  |
NBV Real Estate |  | 0 |  |  |
Model Home [Member] | Model Homes-DMH LP 207 [Member] |  |  |  |  |
Encumbrances |  | 5,615,000 |  |  |
Land, Initial Cost |  | 1,457,000 |  |  |
Building and Improvements, Initial Cost |  | 6,795,000 |  |  |
Acquisition Price |  | 8,252,000 |  |  |
Land Cost, Total Cost |  | 1,457,000 |  |  |
Building & Improvements, Total Cost |  | 6,795,000 |  |  |
Total cost |  | 8,252,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 191,000 |  |  |
NBV Real Estate |  | 8,061,000 |  |  |
Model Home [Member] | Model Homes-NMH Inc. [Member] |  |  |  |  |
Encumbrances |  | 18,570,000 |  |  |
Land, Initial Cost |  | 4,604,000 |  |  |
Building and Improvements, Initial Cost |  | 23,055,000 |  |  |
Acquisition Price |  | 27,659,000 |  |  |
Land Cost, Total Cost |  | 4,604,000 |  |  |
Building & Improvements, Total Cost |  | 23,055,000 |  |  |
Total cost |  | 27,659,000 |  |  |
Accumulated Depreciation & Depreciation | [1] | 931,000 |  |  |
Reserve for Impairment |  | 190,000 |  |  |
NBV Real Estate |  | $ 26,538,000 |  |  |
[1] | Depreciation is computed on a straight-line basis using useful lives up to 39 years.

X
- Definition Amount of lien or mortgage outstanding on real estate investment properties for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 28 -Paragraph Column B -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 970 -SubTopic 360 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478979/970-360-S99-1 + Details
Name: | srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, written down. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 948 -SubTopic 310 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Column G)(Footnote 7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479628/948-310-S99-1 + Details
Name: | us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of accumulated depreciation pertaining to real estate investments for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 970 -SubTopic 360 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column F)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478979/970-360-S99-1 + Details
Name: | us-gaap_RealEstateAccumulatedDepreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before accumulated depreciation of buildings and improvements for entities with a substantial portion of business acquiring and holding investment real estate. Excludes real estate not held as an investment or interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 970 -SubTopic 360 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column E)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478979/970-360-S99-1 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of land for entities with a substantial portion of business acquiring and holding investment real estate. Excludes real estate not held as an investment or interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 970 -SubTopic 360 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column E)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478979/970-360-S99-1 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of land and buildings and improvements made to real estate investments and capitalized after acquisition for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 970 -SubTopic 360 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column D)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478979/970-360-S99-1 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Initial cost of buildings and improvements for entities with a substantial portion of business acquiring and holding investment real estate. Excludes real estate not held as an investment or interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 970 -SubTopic 360 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column C)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478979/970-360-S99-1 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Initial cost of land for entities with a substantial portion of business acquiring and holding investment real estate. Excludes real estate not held as an investment or interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 970 -SubTopic 360 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column C)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478979/970-360-S99-1 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before accumulated depreciation, of real estate investment by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. Excludes real estate not held as investment or interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 970 -SubTopic 360 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column E)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478979/970-360-S99-1 + Details
Name: | us-gaap_RealEstateGrossAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of building and improvement costs capitalized since acquisition for entities with a substantial portion of business acquiring and holding investment real estate. Excludes real estate not held as an investment or interest. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 970 -SubTopic 360 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column D)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478979/970-360-S99-1 + Details
Name: | us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after accumulated depreciation of real estate held for investment for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 970 -SubTopic 360 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478979/970-360-S99-1 + Details
Name: | us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=sqft_IndustrialOfficePropertiesMember
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_DakotaCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_GrandPacificCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_ArapahoeCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_WestFargoIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_The300NPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_OneParkCentreMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_SheaCenterIIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_McelderryMember
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_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=sqft_RetailPropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_UnionTownCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_ResearchParkwayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=sqft_ModelHomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_ModelHomesdmhLp202Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_ModelHomesdmhLp203Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_ModelHomesdmhLp204Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_ModelHomesdmhLp205Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_ModelHomesdmhLP206Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_ModelHomesdmhLp207Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=sqft_ModelHomesnmhIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |