Value of input used to measure long-lived asset.

No definition available.

Name:	seg_ImpairmentLongLivedAssetHeldForUseMeasurementInput
Namespace Prefix:	seg_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

+ Details

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

- Definition

Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

+ Details

Name:	us-gaap_RealEstateInvestmentPropertyNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The carrying amount of investments in unconsolidated real estate and other joint ventures not separately presented. This includes direct and indirect investments.

+ References

+ Details

Name:	us-gaap_RealEstateInvestmentsUnconsolidatedRealEstateAndOtherJointVentures
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputCapRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=seg_MeasurementInputRestaurantMultipleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ValuationTechniqueAxis=us-gaap_ValuationTechniqueDiscountedCashFlowMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Fair Value - Fair Value on a Non-Recurring Basis (Details) $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023
Assets Measured at Fair Value on a Nonrecurring Basis
Net investment in real estate	$ 463,141	$ 437,462
Investments in unconsolidated ventures	$ 28,326	$ 37,459
Minimum \| Capitalization rate
Assets Measured at Fair Value on a Nonrecurring Basis
Discount rates		5.5
Minimum \| Discount rate
Assets Measured at Fair Value on a Nonrecurring Basis
Discount rates		8.5
Minimum \| Restaurant multiples
Assets Measured at Fair Value on a Nonrecurring Basis
Discount rates		8.3
Maximum \| Capitalization rate
Assets Measured at Fair Value on a Nonrecurring Basis
Discount rates		6.75
Maximum \| Discount rate
Assets Measured at Fair Value on a Nonrecurring Basis
Discount rates		13.3
Maximum \| Restaurant multiples
Assets Measured at Fair Value on a Nonrecurring Basis
Discount rates		11.8
Nonrecurring
Assets Measured at Fair Value on a Nonrecurring Basis
Net investment in real estate		$ 321,180
Investments in unconsolidated ventures		40,225
Nonrecurring \| Minimum \| Discounted Cash Flow \| Capitalization rate
Assets Measured at Fair Value on a Nonrecurring Basis
Discount rates			5.5
Nonrecurring \| Minimum \| Discounted Cash Flow \| Discount rate
Assets Measured at Fair Value on a Nonrecurring Basis
Discount rates			8.5
Nonrecurring \| Minimum \| Discounted Cash Flow \| Restaurant multiples
Assets Measured at Fair Value on a Nonrecurring Basis
Discount rates			8.3
Nonrecurring \| Maximum \| Discounted Cash Flow \| Capitalization rate
Assets Measured at Fair Value on a Nonrecurring Basis
Discount rates			6.75
Nonrecurring \| Maximum \| Discounted Cash Flow \| Discount rate
Assets Measured at Fair Value on a Nonrecurring Basis
Discount rates			13.3
Nonrecurring \| Maximum \| Discounted Cash Flow \| Restaurant multiples
Assets Measured at Fair Value on a Nonrecurring Basis
Discount rates			11.8
Nonrecurring \| Fair Value, Inputs, Level 3 [Member]
Assets Measured at Fair Value on a Nonrecurring Basis
Net investment in real estate		321,180
Investments in unconsolidated ventures		$ 40,225