Amount of construction costs reimbursed from SCA during the period.

No definition available.

Name:	tphs_ConstructionCostsReimbursed
Namespace Prefix:	tphs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of construction supervision fee received during the year.

+ References

No definition available.

+ Details

Name:	tphs_ConstructionSupervisionFee
Namespace Prefix:	tphs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The element represents the construction supervision fee receivable.

+ References

No definition available.

+ Details

Name:	tphs_ConstructionSupervisionFeeReceivable
Namespace Prefix:	tphs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The property tax abatement granted as an incentive.

+ References

No definition available.

+ Details

Name:	tphs_PropertyTaxAbatement
Namespace Prefix:	tphs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of total purchase price of property which will be sold under a Purchase and Sale Agreement.

+ References

No definition available.

+ Details

Name:	tphs_TotalPurchasePriceOfProperty
Namespace Prefix:	tphs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount billed to customers under long-term contracts or programs but not paid. Excludes amounts due that have been withheld because of retainage provisions in a contract.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3(c))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Name Accounting Standards Codification
-Topic 910
-SubTopic 310
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=68065756&loc=d3e49354-109356

+ Details

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

- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

+ Details

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

- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 4
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-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790

+ Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=tphs_TenantImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstatePropertiesAxis=tphs_ScaMember
Namespace Prefix:
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Period Type:

Real Estate, Net (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
Real Estate, Net (Details Textual) - USD ($)	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	May 24, 2018
Depreciation	$ 402,000	$ 61,000	$ 724,000	$ 184,000
Total Purchase Price Of Property					$ 81,000,000
Maximum [Member]
Property Tax Abatement			25 years
Minimum [Member]
Property Tax Abatement			15 years
Building and Building Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment, Estimated Useful Lives			27.5 years
Building and Building Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment, Estimated Useful Lives			one year
Tenant Improvements [Member]
Property, Plant and Equipment, Estimated Useful Lives			Shorter of remaining term of the lease or useful life
Tenant Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment, Estimated Useful Lives			27.5 years
Tenant Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment, Estimated Useful Lives			one year
SCA [Member]
Construction Supervision Fee receivable	5,000,000		$ 5,000,000
Contract Receivable	$ 41,500,000		41,500,000
Construction Supervision Fee			20,200,000
Construction Costs Reimbursed			$ 17,100,000