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Note 2 - Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Balance at beginning of year	$ 2,342	$ 2,332
Foreign exchange adjustment	(115)	10
Balance at end of year	$ 2,227	$ 2,342

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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