XML 28 R43.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Long-Term Water Assets - Value of Water Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Components of water assets |  |
Total long-term assets | $ 45,833 | $ 46,700
less: Current portion | (1,351) | (1,351)
Long-term water assets | 44,482 | 45,349
Banked water and water for future delivery |  |
Components of water assets |  |
Total long-term assets | 4,779 | 4,779
Transferable water |  |
Components of water assets |  |
Total long-term assets | 9,117 | 9,309
SWP contracts |  |
Components of water assets |  |
Total long-term assets | 31,937 | 32,612
Accumulated amortization | $ 4,863 | $ 4,188

X
- Definition Long-lived assets held for sale. + References No definition available. + Details
Name: | trc_LongLivedAssetsHeldForSaleAbstract
Namespace Prefix: | trc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Long-lived assets held-for-sale accumulated amortization. + References No definition available. + Details
Name: | trc_LongLivedAssetsHeldForSaleAccumulatedAmortization
Namespace Prefix: | trc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Long term assets held for future use or sale. + References No definition available. + Details
Name: | trc_LongTermAssetsHeldForFutureUseOrSale
Namespace Prefix: | trc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount classified as assets attributable to disposal group held for sale or disposed of. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759 + Details
Name: | us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759 + Details
Name: | us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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