Sale-Leaseback Financing Transaction - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)	Oct. 31, 2024 USD ($) renewalOption	Oct. 31, 2023 USD ($)	Apr. 30, 2024 USD ($)
Financing Liability [Abstract]
Term of agreement	20 years		20 years
Number of renewal options | renewalOption			4
Renewal term	5 years		5 years
Initial basic monthly rent			$ 158
Annual rental increase, as a percent			2.00%
Discount rate	4.75%		4.75%
Gain (loss) on sale leaseback agreement			$ 0
Financing liability	$ 27,782		27,782		$ 28,133
Debt issuance costs on financing liability	618		618		648
Current portion of financing liability	750		750		713
Long-term portion of financing liability	27,032		27,032		27,420
Interest expense on financing liability	315	$ 322	632	$ 647
Financing Liability [Line Items]
Property, plant and equipment, at cost	$ 65,098		$ 65,098		$ 64,234
Building
Financing Liability [Line Items]
Useful Life (in years)	20 years		20 years
Land
Financing Liability [Line Items]
Property, plant and equipment, at cost	$ 41		$ 41