Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.6.0.2
Commitments and Contingencies - Additional Information (Detail)
$ in Millions
1 Months Ended 12 Months Ended
Dec. 31, 2015
ft²
Dec. 31, 2016
USD ($)
ft²
Property
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Commitments And Contingencies [Line Items]        
Additional property available under lease | Property   3    
Lease expiration date   Dec. 31, 2021    
Property leased 41,400      
Rent expenses | $   $ 1.0 $ 0.9 $ 0.7
Operating Lease One [Member] | Research and Office Space [Member]        
Commitments And Contingencies [Line Items]        
Area of space leased   7,700    
Lease expiration date   Jan. 31, 2018    
Operating Lease Two [Member]        
Commitments And Contingencies [Line Items]        
Area of space leased   6,200    
Lease expiration date   Jul. 31, 2021    
Operating Lease Three [Member]        
Commitments And Contingencies [Line Items]        
Lease expiration date   Dec. 31, 2021    
Property leased   41,400