Note 7 - Intangible Assets, Net (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Amortization of Intangible Assets, Total		$ 182	$ 18
Impairment, Long-Lived Asset, Held-for-Use, Total		0	$ 0
Computer Software, Intangible Asset [Member]
Impairment, Long-Lived Asset, Held-for-Use, Total	$ 170	$ 170

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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