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Other (Income) Expense (Tables)
 12 Months Ended
Dec. 31, 2017
Other (Income) Expense, net [Abstract]  
Schedule of Other Operating Cost and Expense, by Component [Table Text Block]
The components of other (income) expense, net, are as follows (in thousands):
 
 
For the Years Ended December 31,
 
 
2017
 
2016
 
2015
Sale of assets
 
$
(346
)
 
$
(618
)
 
$
(408
)
Results of non-consolidated subsidiaries
 
(332
)
 
(506
)
 
(383
)
Foreign exchange
 
916

 
1,832

 
4,507

Interest income
 
—

 
—

 
(56
)
Rents and royalties
 
(454
)
 
(420
)
 
(484
)
Other, net
 
(477
)
 
(632
)
 
493

Total other (income) expense, net
 
$
(693
)
 
$
(344
)
 
$
3,669
Foreign Currency Gains Losses By Currency [Table Text Block]
. Foreign exchange gains and losses are summarized in the following table (in thousands):
 
For the Years Ended December 31,
(Gains) losses by currency
2017
 
2016
 
2015
 
British Pound
$
(92
)

$
807


$
434

 
Canadian Dollar
(95
)

(137
)

1,848

 
Euro
1,413


(49
)

(908
)
 
Indonesian Rupiah
78

 
37

 
315

 
Russian Ruble
(161
)
 
160

 
(45
)
 
Other currencies, net
(227
)

1,014


2,863

Total (gain) loss, net
$
916

 
$
1,832

 
$
4,507