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Goodwill (Tables)
 12 Months Ended
Dec. 31, 2016
Goodwill [Abstract]  
Change in Carrying Amount of Goodwill
The change in carrying amount of goodwill during the years ended December 31, 2016, 2015, and 2014 is shown below:

(In thousands)
 
 
 
Balance, December 31, 2013
 
$
338,800
 
Other adjustments
 
 
—
 
Balance, December 31, 2014
 
 
338,800
 
Navvis sale
 
 
(1,826
) 
Balance, December 31, 2015
 
 
336,974
 
MeYou Health sale
 
 
(2,294
) 
Balance, December 31, 2016
 
$
334,680