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

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

The element represents the construction supervision fee receivable.

No definition available.

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

The gain on the sale of the school condominium representing the recognition of the deferred construction supervision fee.

No definition available.

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

The gain on the sale of the school condominium excluding the deferred construction supervision fee.

No definition available.

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

Intangible assets accumulated amortization.

No definition available.

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

Amount of the company's liquidity requirement.

No definition available.

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

Represents the percentage of property leased.

No definition available.

Name:	tphs_PercentageOfPropertyLeased
Namespace Prefix:	tphs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The remaining fees to be paid by the New York City School Construction Authority ("SCA") to the Company for the construction of a school.

No definition available.

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

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

No definition available.

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

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.

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

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 910
-SubTopic 310
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=118388040&loc=d3e49354-109356

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

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

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

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

No definition available.

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

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.

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

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

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

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275