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Note 8 - Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2023
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
   

Commercial

   

Residential

   

Total

 

Three months ended March 31, 2023

    29 %     71 %     100 %

Three months ended March 31, 2022

    33 %     67 %     100 %