Note 14 - Commitments and Contingencies (Details Textual) - USD ($) |
9 Months Ended | |
|---|---|---|
May 31, 2022 |
May 31, 2021 |
|
| Accrued Bonuses | $ 1,200,000 | $ 1,800,000 |
| Entity Wide Trade Joint Venture Receivables, Two Joint Ventures, Percentage | 62.30% | |
| Entity Wide Trade Joint Venture Receivables, Three Joint Ventures, Percentage | 73.70% | |
| Fiscal 2018 Bonus Plan [Member] | Executive Officer [Member] | ||
| Percentage of Individual Bonus Payout Determined by Actual Versus Targeted EBITOI Results | 75.00% | |
| Percentage of Individuals Payout Determined Upon Achievement of Certain Pre-Established Individual Performance Objectives | 25.00% |