MARKETABLE SECURITIES (Tables)

12 Months Ended

Dec. 31, 2015

Marketable Securities [Abstract]

Schedule of Current Available-for-sale Marketable Securities

At December 31, 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	$	27,765	$	—	$	(187	)	$	27,578
Equity security	8,659		2,963		—			11,622
Total marketable securities	$	36,424	$	2,963	$	(187	)	$	39,200

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 security	$	159,418	$	34	$	(255	)	$	159,197
Equity security	98		1,353		—			1,451
Total marketable securities	$	159,516	$	1,387	$	(255	)	$	160,648

The contractual maturities of debt securities classified as current available-for-sale at December 31, 2015 are as follows:

	Amortized Cost		Fair Value
	(In thousands)
Due in one year or less	$	5,568	$	5,523
Due after one year through five years	22,197		22,055
Total	$	27,765	$	27,578

Schedule of Proceeds from Maturities and Sales of Current Available-for-sale Marketable Securities

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:

	December 31,
	2015		2014		2013
	(In thousands)
Proceeds from maturities and sales of available-for-sale marketable securities	$	218,976	$	25,223	$	82,160
Gross realized gains	443		3,362		35,692