Note 8 - Other Operating Income - Other Operating Income (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Equity income (loss) - Sunrise Energy	$ 1,054	$ (527)
MSHA reimbursements	400	575
Gain on sale of royalty interests in oil properties	0	2,949
Miscellaneous	1,757	3,029
Other Operating Income	$ 3,211	$ 6,026

Represents the amount of MSHA reimbursement during the period.

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The amount of income not otherwise disclosed.

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Amount of gain (loss) on sale or disposal of equity in securities of subsidiaries or equity method investee.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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The total amount of other operating income, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operation.

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