Leases - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Apr. 30, 2022
Leases [Abstract]
Right of use assets	$ 8,955		$ 7,573
Operating cash paid to settle lease liabilities	$ 524	$ 500
Remaining lease term (in years)	9 years
Option to extend, term (in years)	5 years
Option to terminate, term (in years)	1 year
Operating lease, expense	$ 835	847
Operating lease, short term, expense	$ 311	$ 347
Weighted average remaining lease term, operating lease (in years)	5 years 10 months 24 days
Weighted average discount rate, operating lease	4.80%
Weighted average remaining lease term, finance lease (in years)	3 years 10 months 24 days
Weighted average discount rate, finance lease	6.80%