Leases - Summary of Weighted-average Remaining Lease Terms and Discount Rates (Detail)	Sep. 30, 2019
Weighted-average remaining lease term (years)
Operating leases	4 years 2 months 12 days
Finance leases	11 years 8 months 12 days
Weighted-average discount rate
Operating leases	5.31%	[1]
Finance leases	17.16%

[1] Upon adoption of the new lease standard, discount rates used for existing leases were established at January 1, 2019.