XML 60 R47.htm IDEA: XBRL DOCUMENT v2.4.1.9

Summary of Significant Accounting Policies - Reclassifcation Adjustments (Details) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Reclassification adjustment	$ 0us-gaap_PriorPeriodReclassificationAdjustment	$ 1,014,000us-gaap_PriorPeriodReclassificationAdjustment	$ 815,000us-gaap_PriorPeriodReclassificationAdjustment	$ 708,000us-gaap_PriorPeriodReclassificationAdjustment
Water assets sales price		7,702,000trc_LongTermWaterAssetsSoldSalesPrice	7,702,000trc_LongTermWaterAssetsSoldSalesPrice
Cost of purchased water		4,523,000us-gaap_CostOfPurchasedWater	4,523,000us-gaap_CostOfPurchasedWater
Adjustments from APIC to other liabilities			1,065,000us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
Pension plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Reclassification adjustment				$ 989,000us-gaap_PriorPeriodReclassificationAdjustment / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember

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

Amount of other increase (decrease) in additional paid in capital (APIC).

+ References

No definition available.

+ Details

Name:	us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

- Details

Name:	us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of a reclassification adjustment made to prior period financial statement amounts.

+ References

No definition available.

+ Details

Name:	us-gaap_PriorPeriodReclassificationAdjustment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: