Statements of Income and Total Comprehensive Income (Unaudited) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2015 |
Sep. 30, 2014 |
Sep. 30, 2015 |
Sep. 30, 2014 |
|
| Income: | ||||
| Oil and gas royalties | $ 6,060,645 | $ 7,707,981 | $ 18,285,504 | $ 22,813,548 |
| Land sales | 1,888,635 | 323,125 | 22,316,635 | 1,993,730 |
| Easements and sundry income | 10,091,161 | 6,581,105 | 23,697,100 | 16,612,578 |
| Other income | 139,017 | 140,508 | 400,753 | 491,356 |
| 18,179,458 | 14,752,719 | 64,699,992 | 41,911,212 | |
| Expenses: | ||||
| Taxes, other than income taxes | 362,556 | 433,748 | 1,081,136 | 1,308,128 |
| General and administrative expenses | 590,984 | 444,173 | 1,702,248 | 1,382,550 |
| 953,540 | 877,921 | 2,783,384 | 2,690,678 | |
| Operating income | 17,225,918 | 13,874,798 | 61,916,608 | 39,220,534 |
| Interest income earned from investments | 7,290 | 3,749 | 21,243 | 10,473 |
| Income before income taxes | 17,233,208 | 13,878,547 | 61,937,851 | 39,231,007 |
| Income taxes | 5,771,859 | 4,512,504 | 20,894,401 | 12,700,879 |
| Net income | 11,461,349 | 9,366,043 | 41,043,450 | 26,530,128 |
| Other comprehensive income – periodic pension costs, net of income taxes of $12,909, $4,527, $38,728, and $13,582 respectively | 23,975 | 8,408 | 71,924 | 25,224 |
| Total comprehensive income | $ 11,485,324 | $ 9,374,451 | $ 41,115,374 | $ 26,555,352 |
| Average number of sub-share certificates and equivalent sub-share certificates outstanding (in shares) | 8,190,757 | 8,406,403 | 8,226,185 | 8,425,346 |
| Basic and dilutive earnings per sub-share certificate on net income (in dollars per share) | $ 1.40 | $ 1.11 | $ 4.99 | $ 3.15 |
| Cash dividends per sub-share certificate | $ 0.29 | $ 0.27 | ||
| X | ||||||||||
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Total costs of sales and operating expenses for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. No definition available.
|
| X | ||||||||||
- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Revenue from the sale of land in the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
|
| X | ||||||||||
- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Other real estate revenue not otherwise specified in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Revenues from the sale of other goods or rendering of other services, not elsewhere specified in the taxonomy; net of (reduced by) sales adjustments, returns, allowances, and discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Cash outflow to owners or shareholders, excluding ordinary dividends. Includes special dividends. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Revenue earned during the period from the leasing or otherwise lending to a third party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition All taxes not related to income of the entity or excise or sales taxes levied on the revenue of the entity that are not reported elsewhere. These taxes could include production, real estate, personal property, and pump tax. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|