Real Estate Activity - Schedule of Land and Real Estate Ownership (Details) $ in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
|
Jun. 30, 2019
USD ($)
a
county
|
Dec. 31, 2018
USD ($)
a
county
|
|
| Number of Acres | ||
| Land (surface rights) (in acres) | a | 855,553 | 877,462 |
| Real estate acquired (in acres) | a | 46,386 | 24,715 |
| Total real estate situated in 19 counties in Texas (in acres) | a | 901,939 | 902,177 |
| Net Book Value | ||
| Land (surface rights) | $ | $ 0 | $ 0 |
| Real estate acquired | $ | 84,902 | 10,492 |
| Total real estate situated in 19 counties in Texas | $ | $ 84,902 | $ 10,492 |
| Number of counties with real estate in Texas | county | 19 | 19 |
| X | ||||||||||
- Definition Acres [Abstract] No definition available.
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- Definition Land (Surface Rights), Carrying Value No definition available.
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- Definition Net Book Value of Royalty Interests [Abstract] No definition available.
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- Definition Number of Counties with Land Surface Rights No definition available.
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- Definition Surface rights in acre as part of land owned. No definition available.
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- Definition Total Real Estate Including Land Surface Rights No definition available.
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- Definition Total Real Estate and Land Surface Rights, Acres No definition available.
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- Definition Area of a real estate property. No definition available.
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- Definition Amount, before accumulated depreciation, of real estate investment by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. Excludes real estate not held as investment or interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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