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Schedule II - Valuation and Qualifying Accounts (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Valuation and Qualifying Accounts Disclosure [Table Text Block]
   
 
 
 
  
Additions
    
 
 
 
  
 
 
 
DESCRIPTION
  
Balance at
Beginning of
Year
    
Charged
(Credited) to
Costs and
Expenses
    
Charged to
Other Accounts
    
Deductions /
(Recoveries)
    
Balance at
End of Year
  
                                         
Year ended December 31, 2018
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Allowance for doubtful accounts
   $
237
     $
42
 
   $
-
     $
24
(1)
   $
255
  
Deferred tax asset valuation allowance
   $
1,313
     $
568
(2)
   $
-
     $
-
 
   $
1,881
  
                                         
Year ended December 31, 2017
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Allowance for doubtful accounts
   $
235
     $
6
 
   $
-
     $
4
(1)
   $
237
  
Deferred tax asset valuation allowance
   $
1,453
     $
(140)
(2)
   $
-
     $
-
 
   $
1,313