Debt Instrument, Portion Associated With Interest Rate Cap

No definition available.

Name:	trno_DebtInstrumentPortionAssociatedWithInterestRateCap
Namespace Prefix:	trno_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Investment under secured debt book value net.

+ References

No definition available.

+ Details

Name:	trno_InvestmentUnderSecuredDebtBookValueNet
Namespace Prefix:	trno_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line Of Credit Facility, Unencumbered Properties

+ References

No definition available.

+ Details

Name:	trno_LineOfCreditFacilityUnencumberedProperties
Namespace Prefix:	trno_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number Of Mortgage Loans

+ References

No definition available.

+ Details

Name:	trno_NumberOfMortgageLoans
Namespace Prefix:	trno_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number Of Real Estate Properties Used As Collateral

+ References

No definition available.

+ Details

Name:	trno_NumberOfRealEstatePropertiesUsedAsCollateral
Namespace Prefix:	trno_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

No definition available.

+ Details

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

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

+ Details

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trno_January2022TermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trno_September2022SeniorUnsecuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trno_July2024SeniorUnsecuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trno_July2026SeniorUnsecuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trno_October2027SeniorUnsecuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trno_December2029SeniorUnsecuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=trno_October2022UnsecuredRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=trno_TermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=trno_RevolvingCreditFacilityFifthAmendedandRestatedSeniorCreditAgreementMember
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_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
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_CreditFacilityAxis=trno_RevolvingCreditFacilityPreviousAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_FederalFundsEffectiveSwapRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=trno_MortgageLoansPayableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateCapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Narrative (Details)	9 Months Ended
Debt - Narrative (Details)	Sep. 30, 2020 USD ($) loan property	Dec. 31, 2019 USD ($) deritavtive
Debt Instrument [Line Items]
Weighted average fixed annual rate	3.30%
Credit facility
Debt Instrument [Line Items]
Credit facility, maximum	$ 600,000,000.0
Unencumbered properties, percent	60.00%
January 2022 term loan \| Credit facility
Debt Instrument [Line Items]
Credit facility, current	$ 0	$ 0
Senior unsecured notes
Debt Instrument [Line Items]
Weighted average fixed annual rate	3.80%
Senior unsecured notes \| September 2022 senior unsecured notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 50,000,000.0
Senior unsecured notes \| July 2024 senior unsecured notes
Debt Instrument [Line Items]
Debt instrument, face amount	100,000,000.0
Senior unsecured notes \| July 2026 senior unsecured notes
Debt Instrument [Line Items]
Debt instrument, face amount	50,000,000.0
Senior unsecured notes \| October 2027 senior unsecured notes
Debt Instrument [Line Items]
Debt instrument, face amount	50,000,000.0
Senior unsecured notes \| December 2029 senior unsecured notes
Debt Instrument [Line Items]
Debt instrument, face amount	100,000,000.0
Senior unsecured notes \| October 2022 unsecured revolving credit facility
Debt Instrument [Line Items]
Debt instrument, face amount	250,000,000.0
Term loan
Debt Instrument [Line Items]
Interest rate cap	$ 1
Weighted average fixed annual rate	1.40%
Term loan \| Credit facility, Fifth Amended and Restated Senior Credit Agreement \| Minimum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.20%
Term loan \| Credit facility, Fifth Amended and Restated Senior Credit Agreement \| Maximum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.70%
Term loan \| Credit facility, previous agreement \| Minimum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.20%
Term loan \| January 2022 term loan
Debt Instrument [Line Items]
Debt instrument, face amount	$ 100,000,000.0
Portion of term loan associated with interest rate cap	$ 50,000,000.0
Line of credit \| Credit facility \| Federal Funds Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Line of credit \| Credit facility \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.25%
Line of credit \| Credit facility, Fifth Amended and Restated Senior Credit Agreement \| Minimum
Debt Instrument [Line Items]
Credit facility, facility fee, percent	0.15%
Line of credit \| Credit facility, Fifth Amended and Restated Senior Credit Agreement \| Minimum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.05%
Line of credit \| Credit facility, Fifth Amended and Restated Senior Credit Agreement \| Maximum
Debt Instrument [Line Items]
Credit facility, facility fee, percent	0.30%
Line of credit \| Credit facility, Fifth Amended and Restated Senior Credit Agreement \| Maximum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Mortgage loans payable
Debt Instrument [Line Items]
Weighted average fixed annual rate	5.50%
Total net investment book value of properties securing the debt	$ 32,700,000	$ 114,900,000
Number of improved land parcels used as collateral \| property	1
Secured Debt
Debt Instrument [Line Items]
Weighted average fixed annual rate		4.10%
Cash flow hedging \| Interest rate cap
Debt Instrument [Line Items]
Number of mortgage loans payable	1	2