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Note 13 - Notes Receivable (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Mar. 31, 2021
Notes Receivable, Related Parties     $ 5,300,000
Financing Receivable, after Allowance for Credit Loss, Total $ 4,200,000 $ 8,100,000  
Interest Income, Operating, Total 412,000 712,000  
Financing Receivable, Allowance for Credit Loss, Ending Balance 1,900,000 1,600,000  
HQI_Impaired [Member]      
Financing Receivable, after Allowance for Credit Loss, Total 139,594 447,034  
Interest Income, Operating, Total 125,000 174,000  
Financing Receivable, Allowance for Credit Loss, Ending Balance $ 1,500,799 $ 1,193,359  
Minimum [Member]      
Notes Receivable, Interest Fixed Rate 6.00%    
Maximum [Member]      
Notes Receivable, Interest Fixed Rate 10.00%