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Acquisitions Acquisitions (Tables)
 3 Months Ended
Mar. 31, 2015
Business Combinations [Abstract]  
Business Combination, Segment Allocation [Table Text Block]
The following table reflects the changes in the carrying amount of our goodwill for the three months ended March 31, 2015 (in thousands):
 
 
Goodwill
 
 
 
Balance as of December 31, 2014
 
$
91,372

Less: measurement period adjustments
 
(978
)
Balance as of March 31, 2015
 
$
90,394