Quarterly report pursuant to Section 13 or 15(d)

Fair Value (Tables)

v2.4.1.9
Fair Value (Tables)
3 Months Ended
Mar. 31, 2015
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, 2014 and March 31, 2015:
 
 
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

 
As of March 31, 2015
 
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
$
93,160

 
$

 
$
93,160

Commercial paper

 
52,834

 
52,834

Corporate debt securities

 
233,643

 
233,643

U.S. government and government agency debt securities

 
7,747

 
7,747

Total assets measured at fair value
$
93,160

 
$
294,224

 
$
387,384