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Leases - Summary of Supplemental Balance Sheet Information Related to Leases (Detail)
$ in Thousands
Jan. 31, 2020
USD ($)
Finance Leases:  
Property and equipment, at cost $ 4,825
Accumulated depreciation (1,367)
Property and equipment, net $ 3,458
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] us-gaap:PropertyPlantAndEquipmentNet
Other accrued liabilities $ 1,511
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] us-gaap:OtherAccruedLiabilitiesCurrent
Other liabilities $ 1,996
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilitiesNoncurrent
Total finance lease liabilities $ 3,507
Weighted average remaining lease terms:  
Operating leases 6 years 4 months 24 days
Finance leases 2 years 9 months 18 days
Weighted average discount rate:  
Operating leases 4.80%
Finance leases 4.10%