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Note 10 - Leases (Tables)
3 Months Ended
Mar. 31, 2021
Notes Tables  
Leases, Lease Income [Table Text Block]
   

Three Months

Ended

March 31, 2021

   

Three Months

Ended

March 31, 2020

 

Minimum rental payments

  $ 50,705     $ 53,172  

Nonlease payments

    7,522       7,609  

Total

  $ 58,227     $ 60,781