Note 18 - Segment Reporting - Revenue From Operations by Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue	$ 488,098	$ 434,395	$ 458,728
Operating Segments [Member]
Revenue	488,098	434,395	458,728
Operating Segments [Member] \| United States Segment [Member]
Revenue	384,458	345,708	360,205
Operating Segments [Member] \| Europe Segment [Member]
Revenue	90,399	74,796	82,805
Operating Segments [Member] \| Japan Segment [Member]
Revenue	$ 13,241	$ 13,891	$ 15,718

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details