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Significant Accounting Policies (Schedule Of Intangible Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
In-Place Leases [Member]
Finite Lived Intangible Assets [Line Items]
Gross	$ 50,134us-gaap_RealEstateGrossAtCarryingValue / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LeasesAcquiredInPlaceMember	$ 39,413us-gaap_RealEstateGrossAtCarryingValue / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LeasesAcquiredInPlaceMember
Accumulated Amortization	(20,412)us-gaap_RealEstateAccumulatedDepreciation / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LeasesAcquiredInPlaceMember	(17,154)us-gaap_RealEstateAccumulatedDepreciation / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LeasesAcquiredInPlaceMember
Net	29,722trno_SecScheduleIiiRealEstateInvestmentPropertyNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LeasesAcquiredInPlaceMember	22,259trno_SecScheduleIiiRealEstateInvestmentPropertyNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LeasesAcquiredInPlaceMember
Above-Market Leases [Member]
Finite Lived Intangible Assets [Line Items]
Gross	4,332us-gaap_RealEstateGrossAtCarryingValue / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_AboveMarketLeasesMember	4,079us-gaap_RealEstateGrossAtCarryingValue / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_AboveMarketLeasesMember
Accumulated Amortization	(2,771)us-gaap_RealEstateAccumulatedDepreciation / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_AboveMarketLeasesMember	(2,596)us-gaap_RealEstateAccumulatedDepreciation / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_AboveMarketLeasesMember
Net	1,561trno_SecScheduleIiiRealEstateInvestmentPropertyNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_AboveMarketLeasesMember	1,483trno_SecScheduleIiiRealEstateInvestmentPropertyNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_AboveMarketLeasesMember
Below-Market Leases [Member]
Finite Lived Intangible Assets [Line Items]
Gross	(9,627)us-gaap_RealEstateGrossAtCarryingValue / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = trno_BelowMarketLeaseMember	(7,188)us-gaap_RealEstateGrossAtCarryingValue / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = trno_BelowMarketLeaseMember
Accumulated Amortization	4,388us-gaap_RealEstateAccumulatedDepreciation / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = trno_BelowMarketLeaseMember	3,632us-gaap_RealEstateAccumulatedDepreciation / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = trno_BelowMarketLeaseMember
Net	$ (5,239)trno_SecScheduleIiiRealEstateInvestmentPropertyNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = trno_BelowMarketLeaseMember	$ (3,556)trno_SecScheduleIiiRealEstateInvestmentPropertyNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = trno_BelowMarketLeaseMember

X

- Definition

Amount after accumulated depreciation of real estate held for investment for entities with a substantial portion of business acquiring and holding investment real estate.

+ References

No definition available.

+ Details

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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/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 970

-SubTopic 360

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-28.FN4)

-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule III)

-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 28

-Article 12



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule III

-Article 5

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X

- Definition

Amount, before accumulated depreciation, of 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/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule III)

-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 28

-Article 12



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule III

-Article 5



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 970

-SubTopic 360

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-28.4)

-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024

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