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Sale-Leaseback Financing Transaction - Narrative (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Jan. 31, 2026
USD ($)
Jan. 31, 2025
USD ($)
Jan. 31, 2026
USD ($)
renewalOption
Jan. 31, 2025
USD ($)
Apr. 30, 2025
USD ($)
Financing Liability [Line Items]          
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 $ 26,835   26,835   $ 27,420
Financing liability, debt issuance costs, net 547   547   589
Current portion of financing liability 847   847   788
Long-term portion of financing liability 25,988   25,988   26,632
Interest expense on financing liability 303 $ 313 917 $ 944  
Property, plant and equipment, at cost $ 74,742   $ 74,742   $ 71,983
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