Leases - Supplemental Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance lease	$ 2,406	$ 2,604
Operating cash flows from operating leases	5,909	4,146
Financing cash flows from finance lease	3,649	3,450
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$ 12,893	$ 30,593
Weighted-average remaining lease term (in years):
Finance lease	8 years 2 months 12 days	9 years 2 months 12 days
Operating leases	7 years 4 months 24 days	7 years 10 months 24 days
Weighted-average discount rate:
Finance lease	5.60%	5.60%
Operating leases	4.30%	4.60%