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Fair Value Measurements (Tables)
 9 Months Ended
Sep. 30, 2017
Fair Value Disclosures [Abstract]  
Schedule of Assets and Liabilities Measured at Fair Value
The following table presents the fair value of the Company’s financial assets and liabilities determined using the inputs defined above (in thousands).
 
September 30, 2017
 
Level 1
 
Level 2
 
Level 3
 
Total
Assets:
 
 
 
 
 
 
 
Money market funds
$
47,638

 
$
—

 
$
—

 
$
47,638

Corporate bonds
—

 
7,495

 
—

 
7,495

Government bonds
—

 
47,013

 
—

 
47,013

Total financial assets
$
47,638

 
$
54,508

 
$
—

 
$
102,146

 
December 31, 2016
 
Level 1
 
Level 2
 
Level 3
 
Total
Assets:
 
 
 
 
 
 
 
Money market funds
$
11,270

 
$
—

 
$
—

 
$
11,270

Corporate bonds
—

 
21,841

 
—

 
21,841

Commercial paper
—

 
10,769

 
—

 
10,769

Government bonds
—

 
41,289

 
—

 
41,289

Total financial assets
$
11,270

 
$
73,899

 
$
—

 
$
85,169