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Leases - Schedule of Lease Term and Discount Rate (Detail)
Jun. 30, 2020
Dec. 31, 2019
Weighted-average remaining lease term (years):    
Finance leases 3 years 4 months 24 days 3 years 7 months 6 days
Operating leases 1 year 9 months 18 days 2 years 1 month 6 days
Weighted-average discount rate:    
Finance leases 4.39% 4.42%
Operating leases 4.73% 4.75%