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Note 13 - Segment Reporting - Revenue From Operations by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue	$ 126,902	$ 123,048	$ 251,070	$ 239,174
Operating Segments [Member]
Revenue	126,902	123,048	251,070	239,174
Operating Segments [Member] | United States Segment [Member]
Revenue	100,655	95,344	196,151	186,397
Operating Segments [Member] | Europe Segment [Member]
Revenue	23,391	24,655	47,977	46,104
Operating Segments [Member] | Japan Segment [Member]
Revenue	$ 2,856	$ 3,049	$ 6,942	$ 6,673

X

- Definition

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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