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Note 2 - Significant Accounting Policies - Change in Goodwill (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Balance December 31, 2021	$ 370,331
Acquisitions during 2022	47,437
Currency translation	(1,405)
Balance December 31, 2022	$ 416,363

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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