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Note 3 - Related Party Transactions (Details Textual)
12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
Mar. 31, 2021
USD ($)
Notes Receivable, Related Parties       $ 5,300,000
Franchised and Owned Branch Locations 217 139 147  
Jackson Insurance Agency and Bass Underwriters Inc [Member]        
Notes Receivable, Related Parties       $ 5,300,000
Related Party Transaction, Expenses from Transactions with Related Party $ 729,000 $ 726,000    
Jackson Insurance Agency and Bass Underwriters Inc [Member] | Notes Receivable With Related Party [Member]        
Debt Instrument, Interest Rate, Stated Percentage       6.00%
Insurance Technologies [Member]        
Related Party Transaction, Expenses from Transactions with Related Party $ 217,000 $ 188,000    
Worlds Franchisees [Member]        
Number of Worlds Franchises 23 21    
Franchised and Owned Branch Locations 60 49