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Note 8 - Other Operating Income (Tables) | 9 Months Ended
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Sep. 30, 2020
Notes Tables |
Schedule of Other Operating Income (Expense) [Table Text Block] |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Equity income (loss) - Sunrise Energy |  | $ | (119 | ) |  | $ | (184 | ) |  | $ | 1,167 |  |  | $ | (350 | )
Government imposition reimbursements |  |  | 100 |  |  |  | 150 |  |  |  | 300 |  |  |  | 450 |
Gain on sale of royalty interests in oil properties |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 2,949 |
Coal storage |  |  | 127 |  |  |  | — |  |  |  | 211 |  |  |  | — |
Miscellaneous |  |  | 266 |  |  |  | 247 |  |  |  | 910 |  |  |  | 2,439 |
|  | $ | 374 |  |  | $ | 213 |  |  | $ | 2,588 |  |  | $ | 5,488 |

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- Definition The tabular disclosure for other operating income and expenses. + References No definition available. + Details
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- References No definition available. + Details
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Period Type: | duration