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Schedule II - Valuation and Qualifying Accounts
12 Months Ended
Dec. 31, 2018
Valuation and Qualifying Accounts [Abstract]  
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
Schedule II
Valuation and Qualifying Accounts
 
 
Balance at
beginning
of period
 
Additions
charged to
costs and
expenses
 
Deductions (1)
 
Other (2)
 
Balance at
end of
period
Allowance for doubtful accounts
 
 
 
 
 
 
 
 
 
2018
$
760

 
$
223

 
$

 
$
(5
)
 
$
978

2017
$
760

 
$

 
$

 
$

 
$
760

2016
$
586

 
$
887

 
$
(713
)
 
$

 
$
760

Valuation allowance
 
 
 
 
 
 
 
 
 
2018
$
74,153

 
$
20,417

 
$

 
$
(339
)
 
$
94,231

2017
$
69,049

 
$
5,872

 
$

 
$
(768
)
 
$
74,153

2016
$
44,321

 
$
26,634

 
$

 
$
(1,906
)
 
$
69,049

(1) Deductions column represents the reversal of additions previously charged to costs and expenses and uncollectible accounts written off, net of recoveries.
(2) Other column represents the cumulative translation adjustment impact on the allowance.