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Commitments and Contingencies (Details) (USD $)
12 Months Ended 0 Months Ended
Dec. 31, 2014
facility
aft
Nov. 10, 2009
defendant
Dec. 31, 2013
aft
Sep. 30, 2013
Commitment and Contingencies Disclosure [Line Items]        
Capital Leases, Future Minimum Payments Due $ 7,900,000us-gaap_CapitalLeasesFutureMinimumPaymentsDue      
Long-term Water Assets (Volume) 49,461trc_LongTermWaterAssetsVolume   48,383trc_LongTermWaterAssetsVolume  
Estimated future minimum annual payments 800,000us-gaap_CapitalLeasesFutureMinimumPaymentsNetMinimumPayments1      
Number of Community Facility Districts 2trc_NumberofCommunityFacilityDistricts      
Additional bond debt authorized to be sold in future       4,750,000us-gaap_DebtInstrumentFaceAmount
Letter of credit period 2 years      
Letter of credit renewal period 2 years      
Special taxes paid 933,000us-gaap_TaxesOther      
Percentage of Interest Rate Held 2.00%trc_PercentageOfInterestRateHeld      
Standby letter of credit        
Commitment and Contingencies Disclosure [Line Items]        
Letters of Credit Outstanding, Amount 5,426,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_StandbyLettersOfCreditMember
     
Annual cost related to letter of credit 83,000us-gaap_DebtIssuanceCosts
/ us-gaap_CreditFacilityAxis
= us-gaap_StandbyLettersOfCreditMember
     
West CFD        
Commitment and Contingencies Disclosure [Line Items]        
Acres of land related to land liens 420trc_AcresOfLandRelatedToLandLiens
/ us-gaap_CreditFacilityAxis
= trc_WestCommunityFacilitiesDistrictsMember
     
Bond debt sold by TRPFFA 28,620,000us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= trc_WestCommunityFacilitiesDistrictsMember
     
Additional bond debt authorized to be sold in future 0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_CreditFacilityAxis
= trc_WestCommunityFacilitiesDistrictsMember
     
Additional reimbursement funds 0trc_AdditionalReimbursementFunds
/ us-gaap_CreditFacilityAxis
= trc_WestCommunityFacilitiesDistrictsMember
     
East CFD        
Commitment and Contingencies Disclosure [Line Items]        
Acres of land related to land liens 1,931trc_AcresOfLandRelatedToLandLiens
/ us-gaap_CreditFacilityAxis
= trc_EastCommunityFacilitiesDistrictsMember
     
Letters of Credit Outstanding, Amount 39,750,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_CreditFacilityAxis
= trc_EastCommunityFacilitiesDistrictsMember
     
Additional bond debt authorized to be sold in future 80,250,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_CreditFacilityAxis
= trc_EastCommunityFacilitiesDistrictsMember
     
Additional reimbursement funds $ 4,971,000trc_AdditionalReimbursementFunds
/ us-gaap_CreditFacilityAxis
= trc_EastCommunityFacilitiesDistrictsMember
     
Affiliated Entity        
Commitment and Contingencies Disclosure [Line Items]        
Loss Contingency, Number of Defendants   2us-gaap_LossContingencyNumberOfDefendants
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
   
DMB Pacific LLC | Transferable water        
Commitment and Contingencies Disclosure [Line Items]        
Long-term Water Assets (Volume) 6,693trc_LongTermWaterAssetsVolume
/ us-gaap_CounterpartyNameAxis
= trc_DMBPacificLLCMember
/ us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis
= trc_TransferableWaterMember
     
Rosedale Rio Bravo and Buena Vista Water Storage Districts        
Commitment and Contingencies Disclosure [Line Items]        
Number of Community Facility Districts 2trc_NumberofCommunityFacilityDistricts
/ us-gaap_CounterpartyNameAxis
= trc_RosedaleRioBravoandBuenaVistaWaterStorageDistrictsMember