Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v3.5.0.2
Subsequent Events - Additional Information (Detail) - Sales Agreement [Member] - At the Market Offering [Member] - Cowen And Company Llc [Member] - USD ($)
$ in Millions
1 Months Ended 9 Months Ended
Nov. 10, 2016
Sep. 30, 2016
Subsequent Event [Line Items]    
Proceeds from equity offering   $ 35
Subsequent Event [Member]    
Subsequent Event [Line Items]    
Number of shares sold 0