Note 5 - Goodwill and Other Intangibles - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Balance at beginning of year	$ 65,945	$ 39,951
Additions for acquisitions	0	27,115
Purchase accounting adjustments	0	(1,345)
Effects of currency exchange	0	224
Balance at end of year	$ 65,945	$ 65,945