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Note 8 - Long-lived Assets, Including Goodwill and Intangible Assets (Details Textual) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2018
Goodwill, Ending Balance $ 4,169,000   $ 4,169,000   $ 4,166,000    
Intangible Assets, Net (Excluding Goodwill), Total 2,109,000 $ 2,300,000 2,109,000 $ 2,300,000 2,295,000    
Net Income (Loss) Attributable to Parent, Total (32,000) $ 1,180,000 1,789,000 $ 2,611,000      
Resource Plus, Inc [Member]              
Revenues, Total         15,300,000 $ 28,000,000.0  
Net Income (Loss) Attributable to Parent, Total         $ 116,000 $ 679,000  
Resource Plus, Inc [Member]              
Goodwill, Ending Balance 2,000,000.0   2,000,000.0        
Business Acquisition, Percentage of Voting Interests Acquired             51.00%
Resource Plus, Inc [Member] | Brand and Technology [Member]              
Intangible Assets, Net (Excluding Goodwill), Total $ 1,200,000   $ 1,200,000