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Note 6 - Property and Equipment, Net (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Depreciation, Total $ 3,046,000 $ 2,887,000 $ 3,190,000
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration] Impairment of long-lived assets Impairment of long-lived assets  
Impairment, Long-Lived Asset, Held-for-Use $ 4,506,000 $ 1,491  
Continuing Operations [Member]      
Depreciation, Total $ 3,046,000 $ 2,730,000