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Fair Value Measurements (Tables)
 3 Months Ended
Mar. 31, 2014
Fair Value Measurements  
Schedule of financial assets subject to fair value measurements

 

 

 

 

As of
March 31, 2014

 

Level 1

 

Level 2

 

Level 3

 

 

 

(In thousands)

 

Money market funds and cash equivalents

 

$

53,361

 

$

—

 

$

53,361

 

$

—

 

Marketable securities

 

217,324

 

—

 

217,324

 

—

 

 

 

$

270,685

 

$

—

 

$

270,685

 

$

—

 

 

 

 

As of
December 31, 2013

 

Level 1

 

Level 2

 

Level 3

 

 

 

(In thousands)

 

Money market funds and cash equivalents

 

$

148,549

 

$

—

 

$

148,549

 

$

—

 

Marketable securities

 

133,581

 

—

 

133,581

 

—

 

 

 

$

282,130

 

$

—

 

$

282,130

 

$

—