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Note 18 - Segment Reporting - Long-lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Long-lived assets	$ 228,001	$ 166,440	$ 139,474
Operating Segments [Member] | United States Segment [Member]
Long-lived assets	185,979	125,308	108,650
Operating Segments [Member] | Europe Segment [Member]
Long-lived assets	34,577	33,691	23,199
Operating Segments [Member] | Japan Segment [Member]
Long-lived assets	$ 7,445	$ 7,441	$ 7,625

X

- Definition

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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