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Schedule II - Valuation and Qualifying Accounts and Reserves (Tables)
 12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Valuation and Qualifying Accounts [Table Text Block]
   

Balance at

    

Charged to

                    
   

Beginning of

    

Costs and

              

Balance at

  

Description

  

Year

    

Expenses

    

Deductions

      

End of Year

  

Insurance and claims accruals:

                                  

Year ended December 31, 2022

   $ 42,014     $ 67,790     $ (64,057

)

(1)

   $ 45,747  

Year ended December 31, 2021

     39,595       55,342       (52,923

)

(1)

     42,014  

Year ended December 31, 2020

     31,729       64,276       (56,410

)

(1)

     39,595  
                                   
                                   

Allowance for doubtful accounts:

                                  

Year ended December 31, 2022

     348       350       (198

)

(2)

     500  

Year ended December 31, 2021

     348       -       -  

(2)

     348  

Year ended December 31, 2020

     382       220       (254

)

(2)

     348