| Schedule of Debt [Table Text Block] |
| | | October 31, | |
| | | 2021 | | | 2020 | |
| Virginia Real Estate Loan ($6.5 million original principal) payable in monthly installments of $31,812, including interest (at 3.95%), with final payment of $3,318,029 due May 1, 2024 | | $ | 3,899,076 | | | $ | 4,119,850 | |
| North Carolina Real Estate Loan ($2.24 million original principal) payable in monthly installments of $10,963, including interest (at 3.95%), with final payment of $711,773 due May 1, 2024 | | | 954,375 | | | | 1,045,716 | |
| Total long-term debt | | | 4,853,451 | | | | 5,165,566 | |
| Less current installments | | | 324,840 | | | | 312,109 | |
| Long-term debt, excluding current installments | | $ | 4,528,611 | | | $ | 4,853,457 | |
|