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Restructuring Charges (Tables)
 3 Months Ended
Mar. 31, 2018
Restructuring Charges [Abstract]  
Restructuring and Related Costs [Table Text Block]
The following table summarizes the details of changes in our restructuring-related accrual for the period ending March 31, 2018 (in thousands):

 
Accrued Balance December 31, 2017
 
Charges
Incurred
 
Payments
 
Other Adjustments
 
Accrued Balance
March 31,
 2018
Severance pay and benefits
$
915

 
$
1,772

 
$
(1,660
)
 
$
—

 
$
1,027

Employment agreement buyout
1,114

 
—

 
(96
)
 
(7
)
 
1,011

Facility closure expenses
—

 
28

 
(28
)
 
—

 
—

 
$
2,029

 
$
1,800

 
$
(1,784
)
 
$
(7
)
 
$
2,038