Note 4 - Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2019
Goodwill, gross	$ 23,966	$ 21,993
Accumulated impairment charges		0
Goodwill	23,966	21,993	$ 10,800
Goodwill allocation related to acquisition	588
Foreign currency translation	1,385
North America [Member]
Goodwill, gross	7,855	7,179
Accumulated impairment charges		0
Goodwill	7,855	7,179
Goodwill allocation related to acquisition	0
Foreign currency translation	676
Asia [Member]
Goodwill, gross	16,111	14,814
Accumulated impairment charges		0
Goodwill	16,111	14,814
Goodwill allocation related to acquisition	588
Foreign currency translation	709
Europe [Member]
Goodwill, gross	0	0
Accumulated impairment charges		0
Goodwill	0	$ 0
Goodwill allocation related to acquisition	0
Foreign currency translation	$ 0

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
-Paragraph 1
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