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CONSOLIDATED STATEMENTS OF OPERATION - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income Statement [Abstract] |  |  |
Oil and gas operations, net of royalties | $ 791 | $ 764 | $ 820
Total Revenues | 791 | 764 | 820
Operating expenses |  |  |
Oil & gas operations | 1,027 | 1,181 | 1,800
Corporate general and administrative | 408 | 352 | 605
Impairment of natural gas and oil properties | 2,626 | 0 | 2,717
Total Operating Expenses | 4,061 | 1,533 | 5,122
Operating earnings (loss) | (3,270) | (769) | (4,302)
Other income (expense) |  |  |
Interest income | 25 | 23 | 12
Interest expense | (24) | (38) | (62)
Gain on prepayment of debt | 0 | 888 | 0
Gain on sale of land | 0 | 50 | 0
Bad debt expense (recovery) - note receivable | 0 | 0 | 1,430
Other income (expense), net | 28 | (110) | (32)
Total Other income (expense) | 29 | 813 | 1,348
Earnings (loss) from continuing operations | (3,241) | 44 | (2,954)
Earnings from discontinued operations | (5) | 4 | 332
Net income (loss) applicable to common shares | $ (3,246) | $ 48 | $ (2,622)
Net income (loss) per common share-basic and diluted | $ (1.59) | $ 0.02 | $ (1.35)
Weighted average common and equivalent shares outstanding - basic | 2,037 | 1,947 | 1,947

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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. + References No definition available. + Details
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- Definition Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 25 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=96866604&loc=d3e64954-109465 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(a)(15)) -URI http://asc.fasb.org/extlink&oid=82851474&loc=d3e511914-122862 + Details
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