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Restructuring (Tables)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
May 2012 Restructuring Plan [Member]
   
Restructuring Cost and Reserve [Line Items]    
Schedule of Restructuring and Related Costs [Table Text Block]
The following table sets forth a summary of restructuring activities related to the Company’s May 2012 restructuring program in 2013 (in thousands):
    
December 31, 2012
 
Costs Incurred
 
Cash Payments
 
December 31, 2013
Termination benefits
$
149

 
$

 
$
100

 
$
49

The following table sets forth a summary of restructuring activities related to the Company’s May 2012 restructuring program in 2012 (in thousands):
    
December 31, 2011
 
Costs Incurred
 
Cash Payments
 
December 31, 2012
Termination benefits
$

 
$
1,176

 
$
1,027

 
$
149

February 2013 Restructuring Plan [Member]
   
Restructuring Cost and Reserve [Line Items]    
Schedule of Restructuring and Related Costs [Table Text Block]
The following table sets forth a summary of restructuring activities related to the Company's February 2013 restructuring program (in thousands):
    
December 31, 2012
 
Costs Incurred
 
Cash Payments
 
December 31, 2013
Termination benefits

 
2,522

 
2,522