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Other Income (Loss), Net
 12 Months Ended
Dec. 31, 2015
Other Income and Expenses [Abstract]  
Other Income (Loss), Net
Other Income (Loss), Net 
 
Year Ended December 31,
 
2015
 
2014
 
2013
 
(In thousands)
Gain on sale of ownership interests in cost method partner companies
$
2,914

 
$
31,835

 
$
—

Impairment charges on cost method partner companies and private equity funds
(2,754
)
 
(54
)
 
(250
)
Other
57

 
(124
)
 
633

 
$
217

 
$
31,657

 
$
383