Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Leases [Abstract]
Operating lease expense	$ 19,810	$ 18,856	$ 18,533
Short-term lease cost	550	412	601
Variable lease cost	10,653	10,839	9,051
Total operating lease expense	31,013	30,107	28,185
Finance lease cost:
Amortization of right-of-use assets	$ 46	117	117
Interest on lease liabilities		$ 4	$ 9