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Note 5 - Leasing Arrangements (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Operating Lease, Lease Income [Table Text Block]
   
2020
   
2019
 
   
(in thousands)
 
                 
Minimum rentals
  $
2,719
    $
2,863
 
Percentage rentals
   
427
     
1,779
 
Licensing fees
   
456
     
912
 
Other (primarily common area recoveries)
   
1,236
     
1,353
 
Water system sales
   
1,110
     
1,241
 
    $
5,948
    $
8,148
 
Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Table Text Block]
   
(in thousands)
 
2021
  $
2,849
 
2022
  $
2,215
 
2023
  $
1,334
 
2024
  $
788
 
2025
  $
769
 
Thereafter
  $
8,847