Note 6 - Goodwill and Intangible Assets - Changes in Goodwill (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($)
Balance	$ 13,738
Impact of foreign currency translation adjustments	91
Balance	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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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