Sale-Leaseback Financing Transaction - Narrative (Details) $ in Thousands	3 Months Ended
	Jul. 31, 2022 USD ($) numberOfRenewalOptions	Apr. 30, 2022 USD ($)
Financing Liability [Abstract]
Term of agreement	20 years
Number of renewal options | numberOfRenewalOptions	4
Renewal term	5 years
Initial basic monthly rent	$ 158
Annual rental increase, as a percent	2.00%
Discount rate	4.75%
Gain (loss) on sale leaseback agreement	$ 0
Financing liability	29,209	$ 29,350
Debt issuance costs on financing liability	753	768
Current portion of financing liability	591	575
Long-term portion of financing liability	28,618	28,775
Interest expense on financing liability	332
Financing Liability [Line Items]
Property, plant and equipment, at cost	$ 60,716	$ 60,326
Building
Financing Liability [Line Items]
Useful Life (in years)	20 years
Land
Financing Liability [Line Items]
Property, plant and equipment, at cost	$ 41