Note 10 - Intangible Assets - Schedule of Changes in Carrying Amount of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Balance	$ 10,785	$ 5,545
Amortization	(2,007)	(1,456)
Technology access costs	221
Balance	$ 8,999	10,785
Self-fitting Software [Member]
Additional self-fitting software costs		296
Emerald Medical Services Pte. Ltd [Member]
Acquisition		$ 6,400

Information on additional finite-lived intangible assets costs.

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- Definition

Information on technology access costs.

+ References

No definition available.

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- Definition

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.

+ References

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- Definition

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

+ References

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-Publisher FASB
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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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