Note 17 - Segment Reporting - Income From Operations (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income from operations	$ 59,836	$ 79,856	$ 88,898
Operating Segments [Member] \| United States Segment [Member]
Income from operations	98,762	108,594	115,710
Operating Segments [Member] \| Europe Segment [Member]
Income from operations	11,707	15,077	16,747
Operating Segments [Member] \| Corporate Unallocated and Japan Segment[Member]
Income from operations	$ (50,633)	$ (43,815)	$ (43,557)

The net result for the period of deducting operating expenses from operating revenues.

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