Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.10.0.1
Commitments and Contingencies - Additional Information (Detail)
Sep. 30, 2018
Minimum [Member]  
Commitment And Contingencies [Line Items]  
Operating lease expiration period 10 years
Operating lease renewal period 1 year
Maximum [Member]  
Commitment And Contingencies [Line Items]  
Operating lease expiration period 25 years
Operating lease renewal period 5 years