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MARKETABLE SECURITIES (Tables)
 6 Months Ended
Jun. 30, 2015
Marketable Securities [Abstract]  
Schedule of current available-for-sale marketable securities
At June 30, 2015, current available-for-sale marketable securities are as follows:
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
(In thousands)
Corporate debt securities
$
232,766

 
$
151

 
$
—

 
$
232,917

Equity security
97

 
509

 
—

 
606

Total marketable securities
$
232,863

 
$
660

 
$
—

 
$
233,523


At December 31, 2014, current available-for-sale marketable securities are as follows:
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
(In thousands)
Corporate debt securities
$
159,418

 
$
34

 
$
(255
)
 
$
159,197

Equity security
98

 
1,353

 
—

 
1,451

Total marketable securities
$
159,516

 
$
1,387

 
$
(255
)
 
$
160,648
Schedule of contractual maturities of debt securities classified as available-for-sale
The contractual maturities of debt securities classified as current available-for-sale at June 30, 2015 are as follows:
 
Amortized
Cost
 
Fair
Value
 
(In thousands)
Due in one year or less
$
95,946

 
$
95,979

Due after one year through five years
136,820

 
136,938

Total
$
232,766

 
$
232,917
Schedule of proceeds from maturities and sales of current and non-current available-for-sale marketable securities and the related gross realized gains and losses
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:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2015
 
2014
 
2015
 
2014
 
(In thousands)
Proceeds from maturities and sales of available-for-sale marketable securities
$
8,563

 
$
3,462

 
$
14,613

 
$
3,462

Gross realized gains
5

 
2,299

 
5

 
2,299