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Other Income (Expense) (Tables)
 6 Months Ended
Jun. 30, 2013
Other Income and Expenses [Abstract]  
Summary of Other Income (Expense)
A summary of other income (expense) is as follows (in thousands):
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2013
 
2012
 
2013
 
2012
Accrual for loss contingency related to legal proceedings (Note 8)
$
(110,000
)
 
$
—

 
$
(110,000
)
 
$
—

Gain on sale of investment
3,591

 
—

 
3,591

 
—

Other income (expense)
(709
)
 
895

 
318

 
209

Total other income (expense)
$
(107,118
)
 
$
895

 
$
(106,091
)
 
$
209