Document And Entity Information - shares |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
May 03, 2018 |
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| Document Information [Line Items] | ||
| Entity Registrant Name | Dorchester Minerals, L.P. | |
| Entity Central Index Key | 0001172358 | |
| Trading Symbol | dmlp | |
| Current Fiscal Year End Date | --12-31 | |
| Entity Filer Category | Accelerated Filer | |
| Entity Current Reporting Status | Yes | |
| Entity Voluntary Filers | No | |
| Entity Well-known Seasoned Issuer | No | |
| Entity Common Stock, Shares Outstanding (in shares) | 32,279,774 | |
| Document Type | 10-Q | |
| Document Period End Date | Mar. 31, 2018 | |
| Document Fiscal Year Focus | 2018 | |
| Document Fiscal Period Focus | Q1 | |
| Amendment Flag | false |
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- Definition If the value is true, then the document is an amendment to previously-filed/accepted document. No definition available.
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- Definition End date of current fiscal year in the format --MM-DD. No definition available.
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- Definition This is focus fiscal period of the document report. For a first quarter 2006 quarterly report, which may also provide financial information from prior periods, the first fiscal quarter should be given as the fiscal period focus. Values: FY, Q1, Q2, Q3, Q4, H1, H2, M9, T1, T2, T3, M8, CY. No definition available.
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- Definition This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. No definition available.
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- Definition The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word "Other". No definition available.
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- Definition A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument. No definition available.
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- Definition Indicate "Yes" or "No" whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure. No definition available.
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- Definition Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, (4) Smaller Reporting Company (Non-accelerated) or (5) Smaller Reporting Accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure. No definition available.
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- Definition The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Indicate "Yes" or "No" if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. No definition available.
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- Definition Indicate "Yes" or "No" if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A. No definition available.
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- Definition Trading symbol of an instrument as listed on an exchange. No definition available.
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- Definition Property and leasehold improvements - at cost: [Abstract] No definition available.
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- Definition Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition For a classified balance sheet, the cumulative difference as of the balance sheet date between the payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, within one year of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition For a classified balance sheet, the cumulative difference between the rental income or payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, more than one year after the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of the general partner's ownership interest. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition The amount of the limited partners' ownership interests. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Depletion of oil and gas property carried under the full cost method. No definition available.
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- Definition Oil and gas properties, gross, carried under the full cost method. No definition available.
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- Definition Oil and gas properties, net of depletion, carried under the full cost method. No definition available.
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- Definition The amount of ownership interest of different classes of partners in limited partnership. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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Condensed Consolidated Income Statements (Unaudited) - USD ($) shares in Thousands, $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
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| Operating revenues: | ||
| Operating revenues | $ 15,883 | $ 12,727 |
| Costs and expenses: | ||
| Operating, including production taxes | 1,256 | 987 |
| Depreciation, depletion and amortization | 2,184 | 1,755 |
| General and administrative expenses | 1,480 | 1,463 |
| Total costs and expenses | 4,920 | 4,205 |
| Net income | 10,963 | 8,522 |
| Allocation of net income: | ||
| General partner | 374 | 300 |
| Unitholders | $ 10,589 | $ 8,222 |
| Net income per common unit (basic and diluted) (in dollars per share) | $ 0.33 | $ 0.27 |
| Weighted average basis and diluted common units outstanding (000's) (in shares) | 32,280 | 30,675 |
| Royalty [Member] | ||
| Operating revenues: | ||
| Operating revenues | $ 13,246 | $ 10,623 |
| Net Profit Interests [Member] | ||
| Operating revenues: | ||
| Operating revenues | 2,563 | 1,660 |
| Lease Bonus [Member] | ||
| Operating revenues: | ||
| Operating revenues | 38 | 30 |
| Product and Service, Other [Member] | ||
| Operating revenues: | ||
| Operating revenues | $ 36 | $ 414 |
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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Total costs of sales and operating expenses for the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- 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. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- 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/disclosureRef
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- Definition Aggregate amount of net income allocated to general partners. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Aggregate amount of net income allocated to limited partners. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS). No definition available.
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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
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| Net cash provided by operating activities | $ 14,485 | $ 10,086 |
| Cash flows provided (used in) by investing activities: | ||
| Cash contributed in acquisition of royalty interests | 52 | |
| Capital expenditures | (34) | |
| Total cash flows provided by investing activities | 18 | |
| Cash flows used in financing activities: | ||
| Distributions paid to general partner and unitholders | (12,938) | (7,690) |
| Increase in cash and cash equivalents | 1,565 | 2,396 |
| Cash and cash equivalents at beginning of period | 13,827 | 8,212 |
| Cash and cash equivalents at end of period | $ 15,392 | $ 10,608 |
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. No definition available.
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- Definition Amount of cash distribution paid to unit-holder of limited partnership (LP). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash outflow to purchase long lived physical asset for use in the normal oil and gas operations and to purchase mineral interests in oil and gas properties not intended for resale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash inflow from the capital received in cash from a partner in a partnership during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 1 - Basis of Presentation |
3 Months Ended |
|---|---|
Mar. 31, 2018 | |
| Notes to Financial Statements | |
| Basis of Presentation and Significant Accounting Policies [Text Block] | 1 Basis of Presentation: December 2001, and commenced operations on January 31, 2003. The unaudited interim condensed consolidated financial statements include the accounts of Dorchester Minerals, L.P. and its wholly-owned subsidiaries Dorchester Minerals Oklahoma LP, Dorchester Minerals Oklahoma GP, Inc., Maecenas Minerals LLP, and Dorchester-Maecenas GP LLC. The accompanying unaudited interim condensed consolidated financial statements of the Partnership have been prepared in accordance with generally accepted accounting principles in the United States ("U.S. GAAP") and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”). The unaudited interim condensed consolidated financial statements reflect all adjustments (consisting only of normal and recurring adjustments unless indicated otherwise) that are, in the opinion of management, necessary for the fair presentation of our financial position and operating results for the interim period. Interim period results are not necessarily indicative of the results for the calendar year. For more information regarding limitations on the forward-looking statements contained herein, see page 1 of this quarterly report on Form 10 -Q. Per-unit information is calculated by dividing the income or loss applicable to holders of our Partnership’s common units by the weighted average number of units outstanding. The Partnership has no potentially dilutive securities and, consequently, basic and diluted income per unit do not differ. Accordingly, the accompanying unaudited interim condensed consolidated financial statements and related notes should be read in conjunction with the consolidated financial statements and notes thereto included in the Partnership’s Annual Report on Form 10 -K for the year ended December 31, 2017. The accompanying unaudited interim condensed consolidated financial statements include the consolidated results of the Partnership. All significant intercompany balances and transactions have been eliminated in consolidation. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. For example, estimates of uncollected revenues and unpaid expenses from Royalty properties and net profits overriding royalty interests (referred to as the Net Profits Interests, or "NPIs") operated by non-affiliated entities are particularly subjective due to our inability to gain accurate and timely information. Therefore, actual results could differ from those estimates. Acquisitions June 2017, the Partnership acquired an undivided interest in certain mineral and royalty interests in exchange 1,604,343 common units issued pursuant to the Partnership’s registration statements on Form S-4. Fair Value of Financial Instruments may not be representative of actual values of the financial instruments that could have been realized as of quarter close or that will be realized in the future. |
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- Definition The entire disclosure for the basis of presentation and significant accounting policies concepts. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). Accounting policies describe all significant accounting policies of the reporting entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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Note 2 - Commitments and Contingencies |
3 Months Ended |
|---|---|
Mar. 31, 2018 | |
| Notes to Financial Statements | |
| Commitments and Contingencies Disclosure [Text Block] | 2 C ommitments and Contingencies : none of which have predictable outcomes and none of which are believed to have any significant effect on our consolidated financial position, cash flows, or operating results.Operating Leases - We have entered into an operating lease agreement in the ordinary course of our business activities. The third amendment to our office lease was signed on April 17, 2017, for a term of 129 months beginning June 1, 2018. The lease is for our office space at 3838 Oak Lawn Avenue, Suite 300, Dallas, Texas, and now expires in 2029. Under the third amendment to the office lease, monthly rental payments will range from $25,000 - $30,000. The Partnership received a tenant improvement allowance of $0.7 million. |
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- Definition The entire disclosure for commitments and contingencies. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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Note 3 - Distribution to Holders of Common Units |
3 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Mar. 31, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes to Financial Statements | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Partners' Capital Notes Disclosure [Text Block] | 3 D istributions to Holders of Common Units :
Distributions beginning with the second quarter of 2017 were paid on 32,279,774 units; previous distributions set forth above were paid on 30,675,431 units. The first quarter 2018 distribution will be paid on May 10, 2018. Fourth quarter distributions shown above are paid in the first calendar quarter of the following year. Our partnership agreement requires the second quarter cash distribution to be paid by August 14, 2018. |
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- References No definition available.
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- Definition The entire disclosure for the formation, structure, control and ownership of the partnership. Disclosures related to accounts comprising partners' capital. Includes balances of general partners' capital account, limited partners' capital account, preferred partners' capital account and total partners' capital account and units outstanding; accumulated other comprehensive income; amount and nature of changes to amount of partner's capital and units outstanding by class, rights and privileges for each class of units; distribution policies and distributions paid by unit class; impact of and correction of an error in previously issued financial statements; limitations of partners' liability; redemption, conversion and distribution policies; and deferred compensation related to the issuance of units. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 4 - New Accounting Pronouncements |
3 Months Ended |
|---|---|
Mar. 31, 2018 | |
| Notes to Financial Statements | |
| Description of New Accounting Pronouncements Not yet Adopted [Text Block] | 4 New Accounting Pronouncements: May 2014, the FASB issued Accounting Standards Update (ASU) No. 2014 -09, Revenue from Contracts with Customers (ASU 2014 -09 ), which supersedes nearly all existing revenue recognition guidance under U.S. GAAP. The guidance requires entities to recognize revenue using the following five -step model: identify the contract with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue as the entity satisfies each performance obligation. Adoption of this standard could result in retrospective application, either in the form of recasting all prior periods presented or a cumulative adjustment to equity in the period of adoption. On January 1, 2018 we adopted ASU 2014 -09 using the full retrospective method. The Partnership completed its review of a representative sample of revenue contracts covering its material revenue streams and determined that there is no impact to its consolidated financial statements, results of operations or liquidity. When comparing the Partnership’s historical revenue recognition to the newly applied revenue recognition under Accounting Standards Codification (“ASC”) 606, there was no change to the amount or timing of revenue recognized. Therefore, no quantitative adjustment was required to be made to the prior periods presented in the unaudited condensed consolidated financial statements after the adoption of ASC 606. Upon adoption the Partnership had not altered its existing information technology and internal controls outside of the contract review processes in order to identify impacts of future revenue contracts the Partnership may enter into.Accounting Policy two to four months after the production month, the Partnership accrues for revenue earned but not received by estimating production volumes and product prices. Revenues from Lease Bonus are recorded upon receipt. The Lease Bonus is separate from the lease itself and is recognized as revenue to the Partnership upon receipt of payment. In February 2016, the FASB issued ASU 2016 -02, which requires lessees to record most leases on the balance sheet. Under the new guidance, lease classification as either a finance lease or an operating lease will determine how lease-related revenue and expense are recognized. The guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Partnership has lease commitments of $3.0 million that we believe would be subject to capitalization under ASU 2016 -02. The lease obligations that will be in place upon adoption of ASU 2016 -02 may be significantly different than our current obligations. We are still evaluating the impact of ASU 2016 -02 on our consolidated financial statements. |
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- Definition The entire disclosure for a new accounting pronouncement that has been issued but not yet adopted. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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Note 5 - Subsequent Events |
3 Months Ended |
|---|---|
Mar. 31, 2018 | |
| Notes to Financial Statements | |
| Subsequent Events [Text Block] | 5 Subsequent Events : April 18, 2018, the Partnership and affiliates of its general partner consummated and closed the divestiture of non-producing leasehold interests and related net profits interests located in Upton County, Texas to a third party. The Partnership’s share of proceeds from the transaction was $4.0 million and will be included in the cash distribution for the 2 nd quarter ending June 30, 2018. |
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- References No definition available.
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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 3 - Distribution to Holders of Common Units (Tables) |
3 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Mar. 31, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes Tables | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distributions Made to Limited Partner, by Distribution [Table Text Block] |
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| X | ||||||||||
- Definition Tabular disclosure of payment of cash or stock made to limited partner of limited partnership (LP). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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Note 1 - Basis of Presentation (Details Textual) - shares |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Jun. 30, 2017 |
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| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 0 | |
| Royalty and Mineral Interests [Member] | ||
| Limited Partners' Capital Account, Units Issued | 1,604,343 |
| X | ||||||||||
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The number of limited partner units issued. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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Note 2 - Commitments and Contingencies (Details Textual) |
Apr. 17, 2017
USD ($)
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|---|---|
| Tenant Improvement Allowance | $ 700,000 |
| Office Lease [Member] | |
| Lessee, Operating Lease, Term of Contract | 10 years 270 days |
| Office Lease [Member] | Minimum [Member] | |
| Operating Leases, Future Monthly Payments | $ 25,000 |
| Office Lease [Member] | Maximum [Member] | |
| Operating Leases, Future Monthly Payments | $ 30,000 |
| X | ||||||||||
- Definition Amount of required monthly rental payments for operating leases. No definition available.
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| X | ||||||||||
- Definition A tenant improvement allowance associated with an operating lease. No definition available.
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| X | ||||||||||
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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Note 3 - Distribution to Holders of Common Units (Details Textual) - shares |
3 Months Ended | |
|---|---|---|
Jun. 30, 2017 |
Mar. 31, 2017 |
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| Distribution Made to Limited Partner, Unit Distribution | 32,279,774 | 30,675,431 |
| X | ||||||||||
- Definition Number of units distributed for payment of a unit distribution to unit-holder of limited partnership (LP). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 3 - Distribution to Holders of Common Units - Unitholder Cash Distributions Per Common Unit (Details) - $ / shares |
3 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
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| Cash distribution per unit (in dollars per share) | $ 0.418449 | $ 0.386915 | $ 0.28465 | $ 0.322965 | $ 0.3067 | $ 0.241475 | $ 0.252224 | $ 0.257977 | $ 0.147417 |
| X | ||||||||||
- Definition Per unit of ownership amount of cash distributions paid to unit-holder of a limited partnership (LP). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 4 - New Accounting Pronouncements (Details Textual) $ in Millions |
Mar. 31, 2018
USD ($)
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|---|---|
| Operating Leases, Future Minimum Payments Due, Total | $ 3 |
| X | ||||||||||
- Definition Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 5 - Subsequent Events (Details Textual) $ in Millions |
Apr. 18, 2018
USD ($)
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|---|---|
| Subsequent Event [Member] | |
| Proceeds from Divestiture of Non-producing Leasehold Interests and Related Net Profit Interests | $ 4 |
| X | ||||||||||
- Definition Amount of cash inflow from the divestiture of non-producing leasehold interests and related net profits interests. No definition available.
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| X | ||||||||||
- Details
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