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MARKETABLE SECURITIES
 12 Months Ended
Dec. 31, 2013
Marketable Securities [Abstract]  
MARKETABLE SECURITIES
MARKETABLE SECURITIES
At December 31, 2013, current available-for-sale marketable securities are as follows:
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 
(In thousands)
Corporate debt security
$
1,004

 
$
4

 
$
—

 
$
1,008

Total debt security
1,004

 
4

 
—

 
1,008

Equity securities
216

 
4,780

 
—

 
4,996

Total marketable securities
$
1,220

 
$
4,784

 
$
—

 
$
6,004

The contractual maturity of the debt security classified as current available-for-sale at December 31, 2013 is less than one year.
At December 31, 2012, current available-for-sale marketable securities are as follows:
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 
(In thousands)
Corporate debt securities
$
13,608

 
$
19

 
$
—

 
$
13,627

Total debt securities
13,608

 
19

 
—

 
13,627

Equity security
—

 
6,977

 
—

 
6,977

Total marketable securities
$
13,608

 
$
6,996

 
$
—

 
$
20,604

The net unrealized gains in the tables above are included in "Accumulated other comprehensive loss" in the accompanying consolidated balance sheet.
The following table presents the proceeds from maturities and sales of current and non-current available-for-sale marketable securities and the related gross realized gains and losses:
 
December 31,
 
2013
 
2012
 
2011
 
(In thousands)
Proceeds from maturities and sales of available-for-sale marketable securities
$
82,160

 
$
205,944

 
$
600,149

Gross realized gains
35,692

 
4,075

 
2,482

Gross realized losses
—

 
(5
)
 
(41
)

Gross realized gains and losses from the maturities and sales of available-for-sale marketable securities are included in "Other income (expense), net" in the accompanying consolidated statement of operations.