Leases - Additional Information Related to Leases (Details) - USD ($) $ in Thousands	9 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Cash Paid For Amounts Included In The Measurement Of Lease Liabilities [Abstract]
Operating cash flows for finance leases	$ 79	$ 50
Operating cash flows for operating leases	18,345	18,161
Financing cash flows for financing leases	975	384
Right-of-use assets obtained in exchange for new finance lease liabilities	1,614	1,531
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 6,608	$ 6,886
Weighted average remaining lease term (years)
Weighted average remaining lease term - finance leases	2 years 5 months 26 days	3 years 21 days
Weighted average remaining lease term - operating leases	5 years 11 months 15 days	6 years 10 months 20 days
Weighted average discount rate
Weighted average discount rate - finance leases (as a percent)	2.83%	3.00%
Weighted average discount rate - operating leases (as a percent)	3.14%	3.29%