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Note 6 - Impairments (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block]
   

2020

   

2019

   

2018

 

Properties marketed for sale (1)

  $ 5.5     $ 12.5     $ 59.5  

Properties disposed/deeded in lieu/foreclosed (2)

    1.1       36.2       19.7  

Total net impairment charges

  $ 6.6     $ 48.7     $ 79.2