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Restructuring Charges Schedule of Restructuring and Related Costs (Tables)
 12 Months Ended
Dec. 31, 2017
Restructuring and Related Activities [Abstract]  
Restructuring and Related Costs [Table Text Block]
The following table summarizes the activity for the restructuring-related charges discussed above and related accrual (in thousands):
 
Accrued Balance December 31, 2015
 
Charges incurred
 
Payments
 
Currency Translation
 
Other Adjustments
 
Accrued Balance December 31, 2016
 
Charges incurred
 
Payments
 
Other Adjustments
 
Accrued Balance December 31, 2017
Severance pay and benefits
$
2,505

 
$
25

 
$
(2,683
)
 
$
77

 
$
129

 
$
53

 
$
15,983

 
$
(15,104
)
 
$
(17
)
 
$
915

Government incentive repayment
1,884

 
—

 
(1,769
)
 
57

 
(172
)
 
—

 
—

 
—

 
—

 
—

Employment agreement buyout
1,845

 
—

 
(368
)
 
—

 
—

 
1,477

 
—

 
(363
)
 
—

 
1,114

Other corporate restructuring
305

 
168

 
(468
)
 
—

 
(5
)
 
—

 
—

 
—

 
—

 
—

Retention and facility closure expenses
—

 
581

 
(581
)
 
—

 
—

 
—

 
2,789

 
(2,789
)
 
—

 
—

 
$
6,539

 
$
774

 
$
(5,869
)
 
$
134

 
$
(48
)
 
$
1,530

 
$
18,772

 
$
(18,256
)
 
$
(17
)
 
$
2,029