XML 68 R41.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Long-Term Water Assets - Narrative (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) aft | Jun. 30, 2014 USD ($) | Dec. 31, 2015 $ / acre_foot | Dec. 31, 2014 aft | Dec. 31, 2009 aft | Dec. 31, 2008 aft
Long Lived Assets Held For Sale [Line Items] |  |  |  |  |  |  |
Long-term water assets (volume) |  | 49,018 |  |  | 49,461 |  |
Contract renewal optional term |  |  | 35 years |  |  |  |
Water sold (Volume) |  | 7,922 |  |  |  |  |
Water assets sales price | $ | $ 312,000 | $ 10,165,000 | $ 7,703,000 |  |  |  |
Cost of purchased water | $ | $ 135,000 | $ 5,483,000 | $ 4,524,000 |  |  |  |
Transferable water |  |  |  |  |  |  |
Long Lived Assets Held For Sale [Line Items] |  |  |  |  |  |  |
Long-term water assets (volume) |  | 22,179 |  |  |  |  |
AVEK |  |  |  |  |  |  |
Long Lived Assets Held For Sale [Line Items] |  |  |  |  |  |  |
AVEK water bank |  | 13,033 |  |  | 13,033 | 6,393 | 8,393
AVEK water for future delivery |  | 2,362 |  |  | 2,362 |  |
SWP contracts |  |  |  |  |  |  |
Long Lived Assets Held For Sale [Line Items] |  |  |  |  |  |  |
AVEK water for future delivery |  |  |  |  |  | 3,444 |
DMB | Transferable water |  |  |  |  |  |  |
Long Lived Assets Held For Sale [Line Items] |  |  |  |  |  |  |
Long-term water assets (volume) |  | 6,693 |  |  |  |  |
Scenario, Forecast | DMB |  |  |  |  |  |  |
Long Lived Assets Held For Sale [Line Items] |  |  |  |  |  |  |
Consumer price per acre | $ / acre_foot |  |  |  | 675 |  |  |
Maximum | DMB |  |  |  |  |  |  |
Long Lived Assets Held For Sale [Line Items] |  |  |  |  |  |  |
Annual fee increase, percent | 3.00% |  |  |  |  |  |

X
- Definition Cost of Purchased Water, Area + References No definition available. + Details
Name: | trc_CostofPurchasedWaterArea
Namespace Prefix: | trc_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | duration

X
- Definition Long-term Water Assets, Banked Water Held at Agency Owned Water Bank (Volume) + References No definition available. + Details
Name: | trc_LongTermWaterAssetsBankedWaterHeldAtAgencyOwnedWaterBankVolume
Namespace Prefix: | trc_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Long Term Water Assets, Contract Renewal Optional Term + References No definition available. + Details
Name: | trc_LongTermWaterAssetsContractRenewalOptionalTerm
Namespace Prefix: | trc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Long Term Water Assets, Purchased, Annual Fee Increase, Percent + References No definition available. + Details
Name: | trc_LongTermWaterAssetsPurchasedAnnualFeeIncreasePercent
Namespace Prefix: | trc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Long Term Water Assets, Sold, Sales Price + References No definition available. + Details
Name: | trc_LongTermWaterAssetsSoldSalesPrice
Namespace Prefix: | trc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Long-term Water Assets (Volume) + References No definition available. + Details
Name: | trc_LongTermWaterAssetsVolume
Namespace Prefix: | trc_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Long-term Water Assets, Water Contract Rights for Future Delivery (Volume) + References No definition available. + Details
Name: | trc_LongTermWaterAssetsWaterContractRightsForFutureDeliveryVolume
Namespace Prefix: | trc_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Long Term Water Assets, Water Sold (Volume) + References No definition available. + Details
Name: | trc_LongTermWaterAssetsWaterSoldVolume
Namespace Prefix: | trc_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cost of water purchased, may include any water related assessment. If water is bought on a unit volume basis, would also be considered as commodity costs. + 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 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_CostOfPurchasedWater
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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_LongLivedAssetsHeldForSaleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis=trc_TransferableWaterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CounterpartyNameAxis=trc_AntelopeValleyEastKernWaterAgencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CounterpartyNameAxis=trc_StateWaterProjectContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CounterpartyNameAxis=trc_DMBPacificLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |