14. REVENUE AND VENDOR CONCENTRATIONS - Digital currency mining segment major suppliers (Details) - Customer Concentration Risk [Member] - Accounts receivable |
6 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Bitmain Technologies | ||
| Product Information [Line Items] | ||
| Concentration Risk Threshold Percentage | 72.00% | 94.00% |
| Canaan U.S. Inc | ||
| Product Information [Line Items] | ||
| Concentration Risk Threshold Percentage | 20.00% | 0.00% |