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Real Estate - Schedule of Real Estate (Details) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2016 USD ($) | Oct. 31, 2016 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Jan. 31, 2016 ft²
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Real estate development |  |  | $ 267,336 | $ 248,265 |  |
Real estate and improvements - held for lease |  |  | 21,123 | 21,643 |  |
Less accumulated depreciation |  |  | (2,008) | (1,617) |  |
Real estate and improvements - held for lease, net |  |  | 19,115 | 20,026 |  |
Proceeds from sale of real estate/assets |  |  | 0 | 4,616 | $ 796 |
Gain on sale of real estate |  |  | 0 | 1,044 | $ 0 |
Retail Site |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Gross leasable area | ft² |  |  |  |  |  | 4,645
Mountain Village |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Real estate development |  |  | 132,034 | 126,096 |  |
Centennial |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Real estate development |  |  | 94,271 | 89,381 |  |
Grapevine |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Real estate development |  |  | 28,139 | 23,917 |  |
Tejon Ranch Commerce Center |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Real estate development |  |  | 12,892 | 8,871 |  |
Real estate and improvements - held for lease |  |  | $ 21,123 | $ 21,643 |  |
TRCC-East |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Proceeds from sale of real estate/assets |  | $ 1,193 |  |  |  |
Gain on sale of real estate |  | $ 1,437 |  |  |  |
Rancho Santa Fe and Other |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Proceeds from sale of real estate/assets | $ 4,700 |  |  |  |  |
Gain on sale of real estate | $ 1,044 |  |  |  |  |

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- Definition The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.14(d)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition Represents improvements to real estate during development for ultimate sale to third parties. Improvements may consist of project infrastructure and other expenditures necessary to completion of the development project which is generally of a long-term nature. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date, net of valuation allowances and impairment losses, of costs of land expected to be developed in the near term plus capitalized costs of development, for purposes of selling completed units to home buyers or commercial or industrial entities.. + 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 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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