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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Cash flows from operating activities:    
Net loss $ (2,141,480) $ (2,591,888)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation and amortization 324,261 392,978
Bad debt recovery (7,524) (14,838)
Share-based compensation expense 40,605 34,356
Loss on sale of property and equipment 3,167 2,782
(Increase) decrease in:    
Trade accounts receivable 1,304,937 3,563,267
Other receivables 1,371 43,381
Inventories (280,394) 915,488
Prepaid expenses and other assets 103,248 (73,124)
Income taxes refundable 25,003 0
Other assets 84,519 0
Increase (decrease) in:    
Accounts payable and accrued expenses 1,277,881 (1,103,593)
Accrued compensation and payroll taxes 133,518 (632,415)
Income taxes payable 2,775 4,025
Other noncurrent liabilities (346,441) 3,212
Net cash provided by operating activities 525,446 543,631
Cash flows from investing activities:    
Purchase of and deposits for the purchase of property and equipment (41,445) (46,702)
Investment in intangible assets (15,154) (21,060)
Net cash used in investing activities (56,599) (67,762)
Cash flows from financing activities:    
Proceeds from note payable, revolver 13,147,167 0
Payments on note payable, revolver (13,203,450) 0
Principal payments on long-term debt (76,443) (319,459)
Payments for financing costs (25,000) 0
Net cash used in financing activities (157,726) (319,459)
Net increase in cash 311,121 156,410
Cash at beginning of period 140,839 537,330
Cash at end of period $ 451,960 $ 693,740