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Note 8 - Other Operating Income - Other Operating Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 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 |  | 0 | 0 | 2,949
Coal storage | 127 | 0 | 211 | 0
Miscellaneous | 266 | 247 | 910 | 2,439
Other Operating Income | $ 374 | $ 213 | $ 2,588 | $ 5,488

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