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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 6 Months Ended
Apr. 30, 2020
Apr. 30, 2019
Cash flows from operating activities:    
Net loss $ (4,281,069) $ (3,927,445)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 775,343 874,272
Bad debt expense 452,060 42,693
Share-based compensation expense 61,033 898,704
Loss on sale of property and equipment 4,377 1,435
(Increase) decrease in:    
Trade accounts receivable 2,139,322 1,072,995
Other receivables (3,389) 12,002
Inventories 1,058,475 (2,768,468)
Prepaid expenses and other assets 67,120 128,688
Increase (decrease) in:    
Accounts payable and accrued expenses (820,842) 5,060,548
Accrued compensation and payroll taxes (363,032) (1,817,695)
Income taxes payable 5,950 2,938
Other noncurrent liabilities 88,418 (31,777)
Net cash used in operating activities (816,234) (451,110)
Cash flows from investing activities:    
Purchase of and deposits for the purchase of property and equipment (81,494) (448,569)
Investment in intangible assets (22,810) (48,438)
Net cash used in investing activities (104,304) (497,007)
Cash flows from financing activities:    
Payroll taxes withheld and remitted on share-based payments 0 (937,862)
Proceeds from note payable to bank, SBA PPP loan 4,981,400 0
Proceeds from note payable to bank, revolver 350,000 2,350,000
Principal payments on long-term debt (592,202) (329,510)
Payments for financing costs (61,181) 0
Repurchase of common stock 0 (1,257)
Net cash provided by financing activities 4,678,017 1,081,371
Net increase in cash 3,757,479 133,254
Cash at beginning of period 537,330 177,413
Cash at end of period $ 4,294,809 $ 310,667