Quarterly report pursuant to Section 13 or 15(d)

Leases - Additional Information (Detail)

v3.19.3
Leases - Additional Information (Detail)
$ in Millions
9 Months Ended
Sep. 30, 2019
USD ($)
Lessee Lease Description [Line Items]  
Residual value of leased asset $ 3.7
Minimum [Member]  
Lessee Lease Description [Line Items]  
Remaining lease term, operating lease 1 year
Maximum [Member]  
Lessee Lease Description [Line Items]  
Remaining lease term, operating lease 7 years