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Note 7 - Goodwill & Identified Intangible Assets - Identified Intangible Assets (Details) - USD ($)
$ in Thousands
 6 Months Ended 9 Months Ended
Dec. 31, 2024
Sep. 30, 2025
Sep. 30, 2024
Accumulated amortization $ (11,385) $ (13,478) $ (10,687)
Carrying amount, finite-lived intangible assets   29,076  
Total intangible assets other than goodwill 121,208 121,208 121,208
Impairment of Intangible Assets (Excluding Goodwill) [1] (4,000) (4,000)  
Total intangible assets other than goodwill 105,823 103,730 110,521
Carrying amount, finite-lived intangible assets   29,076  
Patents [Member]      
Gross amount, finite-lived intangible assets 895 895 895
Accumulated amortization (863) (872) (859)
Impairment of Intangible Assets, Finite-Lived [1] 0 0  
Carrying amount, finite-lived intangible assets 32 23 36
Carrying amount, finite-lived intangible assets 32 23 36
Customer Relationships [Member]      
Gross amount, finite-lived intangible assets 41,659 41,659 41,659
Accumulated amortization (10,522) (12,606) (9,828)
Impairment of Intangible Assets, Finite-Lived [1] 0 0  
Carrying amount, finite-lived intangible assets 31,137 29,053 31,831
Carrying amount, finite-lived intangible assets 31,137 29,053 31,831
Trademarks [Member]      
Indefinite-lived intangible assets 78,654 78,654 78,654
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) [1] (4,000) (4,000)  
Indefinite-Lived Intangible Assets (Excluding Goodwill), Net of Impairment 74,654 74,654 78,654
Trademarks $ 74,654 $ 74,654 $ 78,654
[1] Relates to the impairment of the Muck brand for the year ended December 31, 2024.