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Note 2 - Supplemental Balance Sheet Information - Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Goodwill	$ 780	$ 780
Customer Relationships [Member]
Gross carrying amount	906	906
Accumulated amortization	(825)	(780)
Computer Software, Intangible Asset [Member]
Gross carrying amount	234	234
Accumulated amortization	$ (234)	$ (234)

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

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

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