Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)

v3.10.0.1
Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)
$ in Millions
Sep. 30, 2018
USD ($)
Accounting Policies [Abstract]  
Prepaid commission expense $ 0.7