Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2013

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):

September 30, 2013	Level 1		Level 2		Level 3		Fair Value
Cash equivalents:
Money market and other funds	$	94,278	$	—	$	—	$	94,278
Time deposits	22,463		—		—		22,463
Corporate commercial papers	6,998		—		—		6,998
Certificates of deposit	14,263		—		—		14,263
Equity securities	38,113		—		—		38,113
Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies	30,359		—		—		30,359
Debt securities issued by states of the U.S. and political subdivisions of the states	4,321		—		—		4,321
Debt securities issued by foreign governments	1,998		—		—		1,998
Corporate debt securities	85,889		—		—		85,889
Total	$	298,682	$	—	$	—	$	298,682
December 31, 2012	Level 1		Level 2		Level 3		Fair Value
Cash equivalents:
Money market and other funds	$	99,351	$	—	$	—	$	99,351
Time deposits	22,093		—		—		22,093
Corporate commercial papers	—		—		—		—
Certificates of deposit	34,876		—		—		34,876
Equity securities	23,497		—		—		23,497
Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies	6,450		—		—		6,450
Debt securities issued by states of the U.S. and political subdivisions of the states	11,658		—		—		11,658
Debt securities issued by foreign governments	3,589		—		—		3,589
Corporate debt securities	44,826		—		—		44,826
Total	$	246,340	$	—	$	—	$	246,340