Note 6 - Goodwill and Intangible Assets - Changes in the Amount of the Carrying Value of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Balance	$ 5,711	$ 6,944
Amortization	(1,440)	(1,233)
Impact of foreign currency translation adjustments	(46)
Balance	13,206	$ 5,711
Z-Sciences [Member]
Finite-lived Intangible Assets Acquired	389
Videology [Member]
Finite-lived Intangible Assets Acquired	4,396
Acculogic [Member]
Finite-lived Intangible Assets Acquired	$ 4,196

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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