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Balance Sheets (Parentheticals) (USD $)
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12 Months Ended | |
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Dec. 31, 2011
A
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Dec. 31, 2010
A
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| Notes receivable for land sales due (in Dollars) | $ 1,707,767 | $ 1,434,436 |
| Surface rights in acres | 918,650 | 949,423 |
| Number of lots | 318 | 318 |
| Nonparticipating perpetual royalty interest in acres 1_16 | 373,777.09 | 373,777.09 |
| Nonparticipating perpetual royalty interest in 85,413.60 acres 1_128 | 85,413.60 | 85,413.60 |
| Certificates of Proprietary Interest, par value (in Dollars per share) | $ 100 | $ 100 |
| Certificates of Proprietary Interest, Outstanding (in Shares) | 0 | 0 |
| Sub-share Certificates in Certificates of Proprietary Interest, par value (in Dollars per share) | $ 0.0333 | $ 0.0333 |
| Sub-share Certificates in Certificates of Proprietary Interest, outstanding (in Shares) | 9,175,414 | 9,548,444 |
| X | ||||||||||
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- Definition
Represents the number of acres related to non-participating perpetual royalty interests. No definition available.
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| X | ||||||||||
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- Definition
An expense-free interest with a perpetual duration in oil or gas, as, if and when produced 1/16 of the proceeds are due to the Trust. Nonparticipating indicates the interest does not share in bonus or rental, nor in the right to execute leases or to explore and develop. No definition available.
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| X | ||||||||||
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- Definition
Number of lots No definition available.
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| X | ||||||||||
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- Definition
Surface rights in acre as part of land owned No definition available.
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| X | ||||||||||
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- Definition
Face amount or stated value of common stock per share; generally not indicative of the fair market value per share. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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