Long-Term Debt (Schedule Of Debt And Finance Lease Obligations) (Details) - USD ($)	Oct. 31, 2020	Apr. 30, 2020
Debt Instrument [Line Items]
Unamortized deferred financing costs	$ (224,916)	$ (279,740)
Total debt	42,263,000	41,415,224
Less current maturities	5,380,120	2,878,160
Long-term debt	36,882,880	38,537,064
Finance lease obligations	2,775,072	3,787,017
Less current maturities	1,650,763	1,902,295
Total finance lease obligations, less current portion	1,124,309	1,884,722
Notes Payable - Bank [Member]
Debt Instrument [Line Items]
Debt	32,312,729	33,472,125
Total debt	32,087,813
Notes Payable - Building [Member]
Debt Instrument [Line Items]
Debt	6,761,578	6,922,561
Total debt	6,761,578
Notes Payable - Equipment [Member]
Debt Instrument [Line Items]
Debt	3,413,609	$ 1,300,278
Total debt	$ 3,413,609

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt discount (premium).

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Present value of lessee's discounted obligation for lease payments from finance lease.

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