Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Finance lease cost:
Amortization of finance lease right-of-use assets	$ 3,974	$ 3,975	$ 3,976
Interest on finance lease liabilities	3,173	3,440
Operating lease cost	8,856	8,293
Short-term lease cost	1,207	2,339
Total lease cost	$ 17,210	$ 18,047