Contribution for joint venture for future development.

No definition available.

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- Definition

Development of building.

+ References

No definition available.

+ Details

Name:	trc_DevelopmentOfBuilding
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Data Type:	num:areaItemType
Balance Type:	na
Period Type:	duration

- Details

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- Definition

Lease of building.

+ References

No definition available.

+ Details

Name:	trc_LeaseOfBuilding
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Data Type:	num:areaItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of joint venture contracts.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Area of land held.

+ References

No definition available.

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 20

-Subparagraph a (1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570

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- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

+ 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 210.5-03.12)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 9

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 11

-Article 7

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 6

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 19

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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Investment in Unconsolidated and Consolidated Joint Ventures (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Investment in Unconsolidated and Consolidated Joint Ventures (Textual) [Abstract]
Investment in joint ventures	$ 55,112,000		$ 55,112,000
Investment in Unconsolidated and Consolidated Joint Ventures (Additional Textual) [Abstract]
Equity in earnings (losses) of unconsolidated joint ventures, net	893,000	412,000	534,000	(30,000)
Petro Travel Plaza Holdings LLC [Member]
Investment in Unconsolidated and Consolidated Joint Ventures (Textual) [Abstract]
Percentage of ownership interest joint ventures	60.00%		60.00%
Investment in joint ventures	9,768,000		9,768,000
Minority investment in joint ventures	50.00%		50.00%
Tejon Mountain Village LLC [Member]
Investment in Unconsolidated and Consolidated Joint Ventures (Textual) [Abstract]
Percentage of ownership interest joint ventures	50.00%		50.00%
Investment in joint ventures	38,974,000		38,974,000
Rockefeller Joint Ventures [Member]
Investment in Unconsolidated and Consolidated Joint Ventures (Textual) [Abstract]
Investment in joint ventures	$ 6,370,000		$ 6,370,000
Number of joint venture contracts			2
Joint venture agreement for development of buildings			91
Development of land in TRCC including pursuing Foreign Trade Zone	500		500
Five West Parcel LLC [Member]
Investment in Unconsolidated and Consolidated Joint Ventures (Textual) [Abstract]
Percentage of ownership interest joint ventures	50.00%		50.00%
Area of building owned and leased			606,000
18-19 West LLC [Member]
Investment in Unconsolidated and Consolidated Joint Ventures (Textual) [Abstract]
Percentage of ownership interest joint ventures	50.00%		50.00%
Contribution of land held for future development			61.5
Centennial Founders, LLC [Member]
Investment in Unconsolidated and Consolidated Joint Ventures (Textual) [Abstract]
Percentage of ownership interest joint ventures	69.44%		69.44%