Annual report pursuant to Section 13 and 15(d)

Fair Value (Tables)

v2.4.1.9
Fair Value (Tables)
 12 Months Ended
Dec. 31, 2014
Fair Value Disclosures [Abstract]  
Schedule of fair value of financial assets and liabilities
The fair value of these financial assets and liabilities was determined using the following inputs at December 31, 2013 and 2014:
 
 
As of December 31, 2013
 
Fair Value Measurement Using
 
Quoted Prices in
Active Markets
for Identical
Instruments (Level 1)
 
Significant Other
Observable
Inputs
(Level 2)
 
Total
 
(in thousands)
Assets
 

 
 

 
 

Money market funds
$
98,437

 
$
—

 
$
98,437

Commercial paper
—

 
101,773

 
101,773

Corporate debt securities
—

 
155,021

 
155,021

U.S. government and government agency debt securities
—

 
5,696

 
5,696

Total assets measured at fair value
$
98,437

 
$
262,490

 
$
360,927

 
As of December 31, 2014
 
Fair Value Measurement Using
 
Quoted Prices in
Active Markets
for Identical
Instruments (Level 1)
 
Significant Other
Observable
Inputs
(Level 2)
 
Total
 
(in thousands)
Assets
 

 
 

 
 

Money market funds
$
89,113

 
$
—

 
$
89,113

Commercial paper
—

 
54,792

 
54,792

Corporate debt securities
—

 
234,697

 
234,697

U.S. government and government agency debt securities
—

 
7,742

 
7,742

Total assets measured at fair value
$
89,113

 
$
297,231

 
$
386,344