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Business Segments - Revenue Components of Real Estate Segments (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Revenue from External Customer [Line Items]      
Segment revenues $ 51,252us-gaap_Revenues $ 45,338us-gaap_Revenues $ 47,089us-gaap_Revenues
Equity in earnings of unconsolidated joint ventures, net 5,294us-gaap_IncomeLossFromEquityMethodInvestments 4,006us-gaap_IncomeLossFromEquityMethodInvestments 2,535us-gaap_IncomeLossFromEquityMethodInvestments
Real estate - commercial/industrial      
Revenue from External Customer [Line Items]      
Segment revenues 11,379us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 11,148us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 9,941us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember
Equity in earnings of unconsolidated joint ventures, net 5,329us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 4,065us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 2,577us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember
Revenues and Income (Loss) from Equity Method Investments 16,708trc_RevenuesandIncomeLossfromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 15,213trc_RevenuesandIncomeLossfromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 12,518trc_RevenuesandIncomeLossfromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember
Real estate - commercial/industrial | Commercial leases      
Revenue from External Customer [Line Items]      
Segment revenues 6,156us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_CommercialLeasesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 6,799us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_CommercialLeasesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 6,095us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_CommercialLeasesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember
Real estate - commercial/industrial | Grazing leases      
Revenue from External Customer [Line Items]      
Segment revenues 1,155us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_GrazingLeasesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 1,433us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_GrazingLeasesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 1,331us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_GrazingLeasesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember
Real estate - commercial/industrial | Land sale      
Revenue from External Customer [Line Items]      
Segment revenues 508us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_LandSaleMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 0us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_LandSaleMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 648us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_LandSaleMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember
Real estate - commercial/industrial | All other land management ancillary services      
Revenue from External Customer [Line Items]      
Segment revenues 3,560us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_OtherLandManagementAncillaryServicesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 2,916us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_OtherLandManagementAncillaryServicesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember		 1,867us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_OtherLandManagementAncillaryServicesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_CommercialAndIndustrialMember
Real estate - resort/residential      
Revenue from External Customer [Line Items]      
Segment revenues 183us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember		 338us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember		 0us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember
Equity in earnings of unconsolidated joint ventures, net (35)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember		 (59)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember		 (42)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember
Revenues and Income (Loss) from Equity Method Investments 148trc_RevenuesandIncomeLossfromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember		 279trc_RevenuesandIncomeLossfromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember		 (42)trc_RevenuesandIncomeLossfromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember
Real estate - resort/residential | Management fees      
Revenue from External Customer [Line Items]      
Segment revenues 180us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_ManagementFeesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember		 312us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_ManagementFeesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember		 0us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_ManagementFeesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember
Real estate - resort/residential | Other      
Revenue from External Customer [Line Items]      
Segment revenues $ 3us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_OtherResortandResidentialRealEstateAncillaryServicesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember		 $ 26us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_OtherResortandResidentialRealEstateAncillaryServicesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember		 $ 0us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= trc_OtherResortandResidentialRealEstateAncillaryServicesMember
/ us-gaap_StatementBusinessSegmentsAxis
= trc_ResortandResidentialRealEstateMember