Note 13 - Discontinued Operations - Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating revenues	$ 240	$ 577	$ 838	$ 1,317
Operating costs and expenses	(309)	(719)	(1,007)	(1,376)
Impairment loss	0	0	(40)	0
Loss from discontinued operations	$ (69)	$ (142)	$ (209)	$ (59)

Amount of loss from loss from classification to held for sale from a discontinued operation attributable to the parent.

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Amount of operating expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.

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