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Schedule II - Valuation and Qualifying Accounts (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Summary of Valuation Allowance [Table Text Block]
      

Additions

         

Description

 

Balance at

Beginning of

Period

  

Charged to

Costs and

Expenses

  

Charged to

Other

Accounts

  

Deductions

  

Balance at End

of Period

 

Year Ended December 31, 2018

                    

Allowance for credit losses

 $1,610  $575  $-  $(245) $1,940 

Tax valuation reserve

 $2,379  $-  $-  $(324) $2,055 
                     

Year Ended December 31, 2019

                    

Allowance for credit losses

 $1,940  $590  $-  $(565) $1,965 

Tax valuation reserve

 $2,055  $160  $-  $-  $2,215 
                     

Year Ended December 31, 2020

                    

Allowance for credit losses

 $1,965  $1,154  $-  $(1,393) $1,726 

Tax valuation reserve

 $2,215  $87  $-  $-  $2,302