Note 6 - Goodwill and Intangible Assets - Changes in Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Balance	$ 21,448	$ 13,738
Impact of foreign currency translation adjustments	(294)	91
Adjustments to preliminary amounts recorded in the fourth quarter of 2021 (see Note 3)	451
Balance	$ 21,605	21,448
Z-Sciences [Member]
Goodwill, Acquired During Period		111
Videology [Member]
Goodwill, Acquired During Period		4,596
Acculogic [Member]
Goodwill, Acquired During Period		$ 2,912

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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