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Note 2 - Supplemental Balance Sheet Information - Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Goodwill	$ 780	$ 780
Customer Relationships [Member]
Gross carrying amount	906	906
Accumulated amortization	(622)	(599)
Computer Software, Intangible Asset [Member]
Gross carrying amount	234	234
Accumulated amortization	$ (234)	$ (234)

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- Definition

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

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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