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Leases - Undiscounted Cash Flows (Details) $ in Thousands	Jan. 31, 2020 USD ($)
Operating Leases
Remainder of 2020	$ 5,791
2021	7,738
2022	7,650
2023	7,657
2024	7,480
Thereafter	43,359
Total lease payments	79,675
Less: imputed interest	11,541
Total lease liability	68,134
Finance Leases
Remainder of 2020	711
2021	955
2022	947
2023	943
2024	641
Thereafter	3,180
Total lease payments	7,377
Less: imputed interest	1,225
Total lease liability	$ 6,152

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