Note 6 - Goodwill and Intangible Assets - Changes in the Amount of the Carrying Value of Indefinite-lived Intangible Assets (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($)
Balance	$ 6,710
Impact of foreign currency translation adjustments	(10)
Balance	8,428
Videology [Member]
Indefinite-lived Intangible Assets Acquired	850
Acculogic [Member]
Indefinite-lived Intangible Assets Acquired	$ 878

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Name:	us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant