Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information Other (Detail)

v3.6.0.2
Commitments and Contingencies - Additional Information Other (Detail) - USD ($)
$ in Millions
Jan. 31, 2017
Dec. 31, 2016
Other Commitments [Line Items]    
Other commitment amount   $ 3.7
Subsequent Event [Member]    
Other Commitments [Line Items]    
Other commitment amount $ 5.0