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Goodwill (Tables)
 12 Months Ended
Dec. 31, 2012
Goodwill [Abstract]  
Change in carrying amount of goodwill
The change in carrying amount of goodwill during the years ended December 31, 2010, 2011, and 2012 is shown below:

(In thousands)
 
Balance, December 31, 2009
 $
496,446
HealthHonors purchase price adjustment
(181
)
Balance, December 31, 2010
496,265
Navvis purchase
21,527
Impairment loss
(182,400
)
Balance, December 31, 2011
335,392
Ascentia purchase
3,303
Balance, December 31, 2012
 $
338,695