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Note 7 - Goodwill (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Goodwill, Ending Balance	$ 110,247	$ 110,247
CMC LLC [Member]
Goodwill, Ending Balance	$ 61,000

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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