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Note 3 - Related Party Transactions - Related Party Balances (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Due to franchisees $ 10,372   $ 9,846
Worlds Franchisees [Member]      
Franchisee royalties 2,438 $ 2,084  
Due to franchisees 733   806
Risk management incentive program liability $ 167   $ 568