Operating Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Leases [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities	$ 1,493	$ 1,897	$ 3,557	$ 3,851
Operating lease ROU assets obtained in exchange for new operating lease liabilities	$ 2,120	$ 880	$ 2,890	$ 1,590