Leases - Present Maturity of Lease Liabilities (Details) $ in Thousands	Jan. 31, 2020 USD ($)
Operating Leases
2020 (remaining nine months)	$ 6,141
2021	7,195
2022	6,531
2023	6,220
2024	5,516
Thereafter	17,730
Total lease payments	49,333
Less: Imputed interest	7,296
Total lease liabilities	42,037
Finance Leases
2020 (remaining nine months)	1,177
2021	1,425
2022	1,391
2023	1,294
2024	1,190
Thereafter	14,208
Total lease payments	20,685
Less: Imputed interest	4,789
Total lease liabilities	$ 15,896