Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Schedule Of Fair Values Of Financial Instruments Measured On Recurring Basis

The following tables present the fair values of the Company’s financial instruments that are measured at fair value on a recurring basis (in thousands):

June 30, 2014	Level 1		Level 2		Level 3		Fair Value
Cash equivalents:
Money market and other funds	$	417,091	$	—	$	—	$	417,091
Time deposits	52,156		—		—		52,156
Corporate commercial papers	8,998		—		—		8,998
Certificates of deposit	—		—		—		—
Equity securities	30,403		—		—		30,403
Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies	26,015		—		—		26,015
Debt securities issued by states of the U.S. and political subdivisions of the states	2,143		—		—		2,143
Debt securities issued by foreign governments	2,041		—		—		2,041
Corporate debt securities	56,018		—		—		56,018
Total	$	594,865	$	—	$	—	$	594,865
December 31, 2013	Level 1		Level 2		Level 3		Fair Value
Cash equivalents:
Money market and other funds	$	101,232	$	—	$	—	$	101,232
Time deposits	22,773		—		—		22,773
Certificates of deposit	14,402		—		—		14,402
Equity securities	30,047		—		—		30,047
Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies	23,702		—		—		23,702
Debt securities issued by states of the U.S. and political subdivisions of the states	3,296		—		—		3,296
Corporate debt securities	66,692		—		—		66,692
Total	$	262,144	$	—	$	—	$	262,144