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Leases - Summary of Lease Term and Discount Rate (Detail)
Sep. 30, 2021
Weighted Average Remaining Lease Term  
Weighted-average remaining lease term—operating leases 5 years 5 months 1 day
Weighted-average remaining lease term—finance leases 2 years 5 months 26 days
Weighted Average Discount Rate  
Weighted-average discount rate—operating leases 3.92%
Weighted-average discount rate—finance leases 3.45%