Leases- Maturities of lease liabilities (Detail) - USD ($) $ in Thousands	Apr. 30, 2020	Jan. 31, 2020
Operating leases
Remaining for Fiscal 2021	$ 8,150
Fiscal 2022	10,233
Fiscal 2023	8,102
Fiscal 2024	7,352
Fiscal 2025	5,338
Thereafter	20,822
Total lease payments	59,997
Less imputed interest	(8,539)
Total	51,458	$ 53,413
Finance leases
Remaining for Fiscal 2021	778
Fiscal 2022	346
Fiscal 2023	0
Fiscal 2024	0
Fiscal 2025	0
Thereafter	0
Total lease payments	1,124
Less imputed interest	(25)
Total	$ 1,099	$ 1,416