Cash and Cash Equivalents and Short-term Investments (Tables)

9 Months Ended

Sep. 30, 2014

Cash and Cash Equivalents and Short-term Investments

Certain information related to our cash and cash equivalents and short term investments

	September 30, 2014						December 31, 2013
	Fair Value		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses		Fair Value		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses
	(In thousands)
Cash and cash equivalents	$	404,453	$	—	$	—	$	389,915	$	—	$	—
Short-term investments:
Available-for-sale equity securities	60,346		33,021		—		96,942		68,395		—
Available-for-sale debt securities:
Corporate debt securities	—		—		—		19,388		4,122		—
Mortgage-backed debt securities	—		—		—		210		11		—
Mortgage-CMO debt securities	19		—		—		20		—		(2		)
Asset-backed debt securities	—		—		—		658		2		(54		)
Total available-for-sale debt securities	19		—		—		20,276		4,135		(56		)
Total available-for-sale securities	60,365		33,021		—		117,218		72,530		(56		)
Total short-term investments	60,365		33,021		—		117,218		72,530		(56		)
Total cash, cash equivalents and short-term investments	$	464,818	$	33,021	$	—	$	507,133	$	72,530	$	(56	)

Available-for-sale of Debt and equity securities

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2014			2013		2014		2013
	(In thousands)					(In thousands)
Available-for-sale
Proceeds from sales and maturities	$	—		$	408	$	22,313	$	107,361
Realized gains (losses), net	$	(267	)	$	2	$	4,636	$	88,159