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

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Weighted average discount rate for finance lease calculated at point in time.

+ References

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Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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