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Held For Sale Assets (Summary Of Operations Of The Property Held For Sale) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Held For Sale Assets [Line Items] |  |
Rental revenues | $ 23,131 us-gaap_RealEstateRevenueNet | $ 15,804 us-gaap_RealEstateRevenueNet
Tenant expense reimbursements | 5,324 us-gaap_TenantReimbursements | 3,733 us-gaap_TenantReimbursements
Property operating expenses | (21,809)us-gaap_OperatingExpenses | (12,426)us-gaap_OperatingExpenses
Depreciation and amortization | (7,626)us-gaap_DepreciationAndAmortization | (4,366)us-gaap_DepreciationAndAmortization
Washington DC, Baltimore And San Francisco [Member] |  |
Held For Sale Assets [Line Items] |  |
Rental revenues | 414 us-gaap_RealEstateRevenueNet / us-gaap_StatementGeographicalAxis = trno_WashingtonDcBaltimoreAndSanFranciscoMember | 387 us-gaap_RealEstateRevenueNet / us-gaap_StatementGeographicalAxis = trno_WashingtonDcBaltimoreAndSanFranciscoMember
Tenant expense reimbursements | 106 us-gaap_TenantReimbursements / us-gaap_StatementGeographicalAxis = trno_WashingtonDcBaltimoreAndSanFranciscoMember | 99 us-gaap_TenantReimbursements / us-gaap_StatementGeographicalAxis = trno_WashingtonDcBaltimoreAndSanFranciscoMember
Property operating expenses | (109)us-gaap_OperatingExpenses / us-gaap_StatementGeographicalAxis = trno_WashingtonDcBaltimoreAndSanFranciscoMember | (111)us-gaap_OperatingExpenses / us-gaap_StatementGeographicalAxis = trno_WashingtonDcBaltimoreAndSanFranciscoMember
Depreciation and amortization | (73)us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = trno_WashingtonDcBaltimoreAndSanFranciscoMember | (155)us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = trno_WashingtonDcBaltimoreAndSanFranciscoMember
Income (loss) from continuing operations | $ 338 us-gaap_IncomeLossFromContinuingOperations / us-gaap_StatementGeographicalAxis = trno_WashingtonDcBaltimoreAndSanFranciscoMember | $ 220 us-gaap_IncomeLossFromContinuingOperations / us-gaap_StatementGeographicalAxis = trno_WashingtonDcBaltimoreAndSanFranciscoMember

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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4613673-111683 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.13) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. + References No definition available. + Details
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- Definition The aggregate revenue from real estate operations during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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- Definition In accordance with the provisions of their lease agreement, this element represents allowable charges due a landlord from its tenant. In retail store and office building leases, for example, tenant reimbursements may cover items such as taxes, utilities, and common area expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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