Long-Term Debt (Aggregate Amount Of Debt, Net Deferred Financing Fees) (Details) - USD ($)	Oct. 31, 2020	Apr. 30, 2020
For the remaining 6 months of the fiscal year ending April 30: 2021	$ 4,769,317
For the fiscal years ending April 30:
2022	34,433,202
2023	699,869
2024	1,141,474
2025	686,706
2026	276,136
Thereafter	256,296
Total debt	42,263,000	$ 41,415,224
Notes Payable - Bank [Member]
For the remaining 6 months of the fiscal year ending April 30: 2021	4,168,854
For the fiscal years ending April 30:
2022	27,420,684
2023
2024	498,275
2025
2026
Thereafter
Total debt	32,087,813
Notes Payable - Building [Member]
For the remaining 6 months of the fiscal year ending April 30: 2021	161,593
For the fiscal years ending April 30:
2022	6,135,090
2023	47,752
2024	50,571
2025	53,557
2026	56,719
Thereafter	256,296
Total debt	6,761,578
Notes Payable - Equipment [Member]
For the remaining 6 months of the fiscal year ending April 30: 2021	438,870
For the fiscal years ending April 30:
2022	877,428
2023	652,117
2024	592,628
2025	633,149
2026	219,417
Thereafter
Total debt	$ 3,413,609

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
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