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Note 12 - Long-term Incentive Plan (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
[1]
Oct. 06, 2009
Minimum Percentage of Fair Market Value for Non-qualified Stock Option Price 100.00%      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period 0 0    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number 0 54,000 54,000  
Share-Based Payment Arrangement, Expense $ 1,000 $ 4,000    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 0      
Ten Percent Shareholders [Member]        
Minimum Percentage of Fair Market Value for Incentive Stock Option Price 110.00%      
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period 10 years      
Other Employees [Member]        
Minimum Percentage of Fair Market Value for Incentive Stock Option Price 100.00%      
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period 5 years      
Avalon Holdings Corporation 2009 Long Term Incentive Plan [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period 10 years      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period 5 years      
Number Of Years After Options Vested, Stock Price Reach Predetermined Vesting Price 3 years      
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate 0.00%      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period 36,000      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number 18,000      
Avalon Holdings Corporation 2009 Long Term Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period 1 year      
Avalon Holdings Corporation 2009 Long Term Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Minimum [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period 6 months      
Avalon Holdings Corporation 2009 Long Term Incentive Plan [Member] | Common Class A [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized       1,300,000
[1] Contract Vesting Term: The stock options vest ratably over a five year period.