Note 2 - Supplemental Balance Sheet Information - Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Goodwill	$ 780	$ 780
Customer Relationships [Member]
Gross carrying amount	906	906
Accumulated Amortization	(906)	(870)
Computer Software, Intangible Asset [Member]
Gross carrying amount	234	234
Accumulated Amortization	$ (234)	$ (234)

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

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