Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Details)

v3.6.0.2
Fair Value Measurements (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
U.S treasury obligations    
Assets and liabilities measure at fair value on a recurring basis:    
Marketable securities $ 25,005  
Money market funds    
Assets and liabilities measure at fair value on a recurring basis:    
Cash and cash equivalents 58,588 $ 35,909
Recurring    
Assets and liabilities measure at fair value on a recurring basis:    
Total 83,593  
Recurring | U.S treasury obligations    
Assets and liabilities measure at fair value on a recurring basis:    
Marketable securities 25,005  
Recurring | Money market funds    
Assets and liabilities measure at fair value on a recurring basis:    
Cash and cash equivalents 58,588 35,909
Recurring | Level 1    
Assets and liabilities measure at fair value on a recurring basis:    
Total 83,593  
Recurring | Level 1 | U.S treasury obligations    
Assets and liabilities measure at fair value on a recurring basis:    
Marketable securities 25,005  
Recurring | Level 1 | Money market funds    
Assets and liabilities measure at fair value on a recurring basis:    
Cash and cash equivalents $ 58,588 $ 35,909