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Note 5 - Revenues - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Revenue from Contract with Customer, Excluding Assessed Tax $ 83,795 $ 80,899
Waste Management Services [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax 45,922 44,611
Waste Management Services [Member] | Operating Segments [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax 45,922 44,611
Waste Management Services [Member] | Waste Brokerage And Management Services Member    
Revenue from Contract with Customer, Excluding Assessed Tax 42,862 41,578
Waste Management Services [Member] | Captive Landfill Management Operations [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax 3,060 3,033
Golf and Related Operations [Member] | Operating Segments [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax 37,873 36,288
Golf and Related Operations [Member] | Food and Beverage [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax 13,537 13,491
Golf and Related Operations [Member] | Membership Dues [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax 7,430 7,341
Golf and Related Operations [Member] | Room Rental [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax 7,227 6,435
Golf and Related Operations [Member] | Green Fees and Cart Rental [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax 3,336 3,300
Golf and Related Operations [Member] | Salon and Spa Services [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax 3,763 2,989
Golf and Related Operations [Member] | Fitness and Tennis Lesson [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax 321 394
Golf and Related Operations [Member] | Other Revenue [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax $ 2,259 $ 2,338