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Note 2 - Allowance for Doubtful Accounts (Tables) | 12 Months Ended
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Nov. 30, 2020
Notes Tables |
Financing Receivable, Allowance for Credit Loss [Table Text Block] |
|  | Twelve Months Ended |
|  | November 30, 2020 |  |  | November 30, 2019 |
Balance, beginning |  | $ | 22,925 |  |  | $ | 25,100 |
Provision charged to expense |  |  | 44,222 |  |  |  | (1,602 | )
Less amounts charged-off |  |  | (15,972 | ) |  |  | (573 | )
Balance, ending |  | $ | 51,175 |  |  | $ | 22,925 |

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