Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.8.0.1
Commitments and Contingencies - Additional Information (Detail)
$ in Millions
 1 Months Ended
Apr. 30, 2018
USD ($)
Subsequent Event [Member]  
Commitments And Contingencies [Line Items]  
Loss Contingency, Damages Sought, Value $ 5