XML 67 R53.htm IDEA: XBRL DOCUMENT
v3.22.1

Schedule III - Real Estate and Related Depreciation (Details) | Dec. 31, 2021 USD ($) ft²
--- | ---
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 831,191 |
Initial cost, Land | $ 6,122,065 |
Initial cost, Buildings & Improvements | 53,470,167 |
Costs Subsequent to Acquisition | 6,464,347 |
Gross Carrying Amount, Land | 6,122,065 |
Gross Carrying Amount, Buildings & Improvements | 59,934,514 |
Total | 66,056,579 |
Accumulated Depreciation | $ 7,811,436 |
Clinton, CT |  |
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 30,408 | [1]
Initial cost, Land | $ 356,040 | [1]
Initial cost, Buildings & Improvements | 3,108,285 | [1]
Costs Subsequent to Acquisition | 31,585 | [1]
Gross Carrying Amount, Land | 356,040 | [1]
Gross Carrying Amount, Buildings & Improvements | 3,139,870 | [1]
Total | 3,495,910 | [1]
Accumulated Depreciation | $ 388,093 | [1]
Bolingbrook, IL |  |
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 113,700 | [2]
Initial cost, Land | $ 633,914 | [2]
Initial cost, Buildings & Improvements | 5,491,409 | [2]
Costs Subsequent to Acquisition | 2,472,375 | [2]
Gross Carrying Amount, Land | 633,914 | [2]
Gross Carrying Amount, Buildings & Improvements | 7,963,784 | [2]
Total | 8,597,698 | [2]
Accumulated Depreciation | $ 1,214,464 | [2]
Dolton, IL |  |
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 86,590 | [2]
Initial cost, Land | $ 614,413 | [2]
Initial cost, Buildings & Improvements | 5,227,313 | [2]
Costs Subsequent to Acquisition | 17,411 | [2]
Gross Carrying Amount, Land | 614,413 | [2]
Gross Carrying Amount, Buildings & Improvements | 5,244,724 | [2]
Total | 5,859,137 | [2]
Accumulated Depreciation | $ 835,749 | [2]
McCordsville, IN |  |
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 76,360 | [1]
Initial cost, Land | $ 770,000 | [1]
Initial cost, Buildings & Improvements | 6,776,000 | [1]
Costs Subsequent to Acquisition | 479,652 | [1]
Gross Carrying Amount, Land | 770,000 | [1]
Gross Carrying Amount, Buildings & Improvements | 7,255,652 | [1]
Total | 8,025,652 | [1]
Accumulated Depreciation | $ 913,388 | [1]
Merrillville, IN |  |
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 80,970 | [2]
Initial cost, Land | $ 597,229 | [2]
Initial cost, Buildings & Improvements | 5,104,011 | [2]
Costs Subsequent to Acquisition | 464,538 | [2]
Gross Carrying Amount, Land | 597,229 | [2]
Gross Carrying Amount, Buildings & Improvements | 5,568,549 | [2]
Total | 6,165,778 | [2]
Accumulated Depreciation | $ 859,562 | [2]
Millbrook, NY |  |
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 24,472 | [1]
Initial cost, Land | $ 423,960 | [1]
Initial cost, Buildings & Improvements | 2,900,895 | [1]
Costs Subsequent to Acquisition | 2,343,125 | [1]
Gross Carrying Amount, Land | 423,960 | [1]
Gross Carrying Amount, Buildings & Improvements | 5,244,020 | [1]
Total | 5,667,980 | [1]
Accumulated Depreciation | $ 464,274 | [1]
Rochester, NY |  |
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 68,131 | [2]
Initial cost, Land | $ 571,583 | [2]
Initial cost, Buildings & Improvements | 5,227,630 | [2]
Costs Subsequent to Acquisition | 33,415 | [2]
Gross Carrying Amount, Land | 571,583 | [2]
Gross Carrying Amount, Buildings & Improvements | 5,261,045 | [2]
Total | 5,832,628 | [2]
Accumulated Depreciation | $ 795,872 | [2]
Lima, OH |  |
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 96,883 | [1]
Initial cost, Land | $ 530,000 | [1]
Initial cost, Buildings & Improvements | 4,664,000 | [1]
Costs Subsequent to Acquisition | 240,444 | [1]
Gross Carrying Amount, Land | 530,000 | [1]
Gross Carrying Amount, Buildings & Improvements | 4,904,444 | [1]
Total | 5,434,444 | [1]
Accumulated Depreciation | $ 635,353 | [1]
Sadsburyville, PA |  |
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 78,857 | [2]
Initial cost, Land | $ 462,749 | [2]
Initial cost, Buildings & Improvements | 5,146,579 | [2]
Costs Subsequent to Acquisition | 34,833 | [2]
Gross Carrying Amount, Land | 462,749 | [2]
Gross Carrying Amount, Buildings & Improvements | 5,181,412 | [2]
Total | 5,644,161 | [2]
Accumulated Depreciation | $ 825,155 | [2]
West Henrietta, NY |  |
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 55,550 | [1]
Initial cost, Land | $ 628,251 | [1]
Initial cost, Buildings & Improvements | 5,229,481 | [1]
Costs Subsequent to Acquisition | 262,333 | [1]
Gross Carrying Amount, Land | 628,251 | [1]
Gross Carrying Amount, Buildings & Improvements | 5,491,814 | [1]
Total | 6,120,065 | [1]
Accumulated Depreciation | $ 170,667 | [1]
SSG Summerville I LLC | Summerville, SC |  |
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 76,410 | [2],[3]
Initial cost, Land | $ 345,160 | [2],[3]
Initial cost, Buildings & Improvements | 2,989,159 | [2],[3]
Costs Subsequent to Acquisition | 67,078 | [2],[3]
Gross Carrying Amount, Land | 345,160 | [2],[3]
Gross Carrying Amount, Buildings & Improvements | 3,056,237 | [2],[3]
Total | 3,401,397 | [2],[3]
Accumulated Depreciation | $ 460,354 | [2],[3]
SSG Summerville II LLC | Summerville, SC |  |
Real Estate And Accumulated Depreciation [Line Items] |  |
Square Footage | ft² | 42,860 | [2],[4]
Initial cost, Land | $ 188,766 | [2],[4]
Initial cost, Buildings & Improvements | 1,605,405 | [2],[4]
Costs Subsequent to Acquisition | 17,558 | [2],[4]
Gross Carrying Amount, Land | 188,766 | [2],[4]
Gross Carrying Amount, Buildings & Improvements | 1,622,963 | [2],[4]
Total | 1,811,729 | [2],[4]
Accumulated Depreciation | $ 248,505 | [2],[4]
[1] | This property is held as collateral under the Revolver. There was no outstanding balance under the Revolver as of December 31, 2021.
[2] | This property is held as collateral under the Loan Agreement with an outstanding balance of $18,335,407 as of December 31, 2021
[3] | SSG Summerville I LLC.
[4] | SSG Summerville II LLC

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | srt_RealEstateAndAccumulatedDepreciationLineItems
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
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 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 -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column F)) -URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column E)) -URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column E)) -URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of cost capitalized subsequent to acquisition for real estate investment property, including, but not limited to, real estate tax and insurance, by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. Excludes initial purchase price and improvement, and real estate not held as investment or interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column D)) -URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
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 -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column C)) -URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column C)) -URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column E)) -URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024 + Details
Name: | us-gaap_RealEstateGrossAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_CT
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=self_BolingbrookIllinoisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=self_DoltonIllinoisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=self_McCordsvilleIndianaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=self_MerrillvilleIndianaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=self_MillbrookNewYorkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=self_RochesterNewYorkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_OH
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_PA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=self_WestHenriettaNewYorkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=self_SSGSummervilleILLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_SC
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=self_SSGSummervilleIILLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |