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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2013
Fair Value Disclosures [Abstract]  
Summary Of Financial Assets And Liabilities Accounted For At Fair Value
The table below sets forth, by level, the Company’s financial assets and liabilities that are recorded at fair value in the accompanying condensed consolidated balance sheet: 
 
 
Fair Value at June 30, 2013
 
 
Total
 
Level 1
 
Level 2
 
Level 3
 
 
(In thousands)
Assets:
 
 

 
 

 
 

 
 

Investments in marketable securities
 
$
260,936

 
$
94,036

 
$
166,900

 
$

Derivatives
 
34,853

 
30,959

 

 
3,894

Total assets
 
$
295,789

 
$
124,995

 
$
166,900

 
$
3,894

Liabilities:
 
 

 
 

 
 

 
 

Derivatives
 
$
542

 
$

 
$
86

 
$
456

Summary Of Change In The Fair Values Of Financial Instruments Categorized As Level 3
The following table summarizes the change in the fair values of financial instruments categorized as level 3.
 
 
Three Months Ended June 30, 2013
 
Six Months Ended June 30, 2013
 
 
(In thousands)
Balance, beginning of period
 
$
5,642

 
$
8,174

Realized and unrealized losses recognized in earnings, net
 
(4,840
)
 
(9,312
)
Realized and unrealized losses recognized in other comprehensive income, net
 

 

Purchases
 
2,636

 
5,853

Issuances
 

 
(25
)
Settlements
 

 
(1,252
)
Ending balance
 
$
3,438

 
$
3,438