Note 6 - Other Comprehensive Income (Loss) - Components of Other Comprehensive (Loss) Income and Related Tax Effects (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other comprehensive income (loss), before tax	$ (281)	$ 206	$ 1,800	$ 1,491
Other comprehensive income (loss), tax	(79)	57	503	416
Other comprehensive income (loss), net of tax	$ (202)	$ 149	$ 1,297	$ 1,075

Amount after tax of other comprehensive income (loss) attributable to parent entity.

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