Note 13 - Segment Reporting - Long-lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Long-lived assets	$ 270,946	$ 280,346
Operating Segments [Member] \| United States Segment [Member]
Long-lived assets	209,416	215,701
Operating Segments [Member] \| Europe Segment [Member]
Long-lived assets	56,925	59,388
Operating Segments [Member] \| Japan Segment [Member]
Long-lived assets	$ 4,605	$ 5,257

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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