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INVESTMENTS (Tables)
 6 Months Ended
Jun. 30, 2011
INVESTMENTS  
Short-term investments

The following table summarizes, by major security type, the Company’s short-term investments as of June 30, 2011 (in thousands):

 

 

 

Cost

 

Gross
Unrealized
Gains

 

Gross
Unrealized
Losses

 

Fair
Value

 

Available for sale securities

 

 

 

 

 

 

 

 

 

U.S. government securities

 

$

586,504

 

$

334

 

$

(2

)

$

586,836

 

Foreign government securities

 

665,440

 

6

 

(458

)

664,988

 

U.S. agency securities

 

45,564

 

23

 

—

 

45,587

 

U.S. corporate notes

 

40,582

 

177

 

(1

)

40,758

 

Total

 

$

1,338,090

 

$

540

 

$

(461

)

$

1,338,169

 

 

As of June 30, 2011, foreign government securities included investments in debt securities issued by the governments of Germany, the Netherlands, France and the United Kingdom.

 

The following table summarizes, by major security type, the Company’s short-term investments as of December 31, 2010 (in thousands):

 

 

 

Cost

 

Gross
Unrealized
Gains

 

Gross
Unrealized
Losses

 

Fair
Value

 

Available for sale securities

 

 

 

 

 

 

 

 

 

U.S. government securities

 

$

469,116

 

$

158

 

$

(66

)

$

469,208

 

Foreign government securities

 

682,841

 

558

 

(81

)

683,318

 

U.S. agency securities

 

109,920

 

15

 

(30

)

109,905

 

U.S. corporate notes

 

40,845

 

—

 

(25

)

40,820

 

Total

 

$

1,302,722

 

$

731

 

$

(202

)

$

1,303,251