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Redeemable Noncontrolling Interest (Tables)
 12 Months Ended
Dec. 31, 2017
Noncontrolling Interest [Abstract]  
Summary of Changes in Redeemable Noncontrolling Interests

Changes in redeemable noncontrolling interests are as follows:

(in thousands)

 

 

 

 

Balance at December 31, 2016

 

$

—

 

Redeemable noncontrolling interest related to 2017 acquisition

 

 

6,735

 

Adjustment to the redemption value

 

 

(30

)

Foreign currency translation adjustment

 

 

(57

)

Balance at December 31, 2017

 

$

6,648