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Consolidated Statements of Stockholders' Deficit - USD ($) | Total | Cumulative Effect, Period of Adoption, Adjustment [Member] | Common Stock [Member] | Additional Paid-In Capital [Member] | Treasury Stock [Member] | Other Comprehensive Income [Member] | Other Comprehensive Income [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] | Accumulated Deficit [Member] | Accumulated Deficit [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Nov. 30, 2018 | $ (8,908,298) |  | $ 135,964 | $ 35,515,382 | $ (19,571,113) | $ 340,984 |  | $ (25,329,515) |
Beginning balance (Accounting Standards Update 2016-01 [Member]) at Nov. 30, 2018 |  |  |  |  |  |  | $ (340,984) |  | $ 340,984
Beginning balance (ASC 606 [Member]) at Nov. 30, 2018 |  | $ 253,447 |  |  |  |  |  |  | $ 253,447
Beginning balance, shares at Nov. 30, 2018 |  |  | 13,596,409 |  |  |  |  |  |
Common stock issued | 5,700 |  | $ 25 | 5,675 |  |  |  |  |
Common stock issued, shares |  |  | 2,500 |  |  |  |  |  |
Compensatory element of stock options | 397,770 |  |  | 397,770 |  |  |  |  |
Treasury Stock | (992,244) |  |  |  | (992,244) |  |  |  |
Net income | 2,290,774 |  |  |  |  |  |  | 2,290,774 |
Ending balance at Nov. 30, 2019 | (6,952,851) |  | $ 135,989 | 35,918,827 | (20,563,357) |  |  | (22,444,310) |
Ending balance, shares at Nov. 30, 2019 |  |  | 13,598,909 |  |  |  |  |  |
Common stock issued | 41,000 |  | $ 347 | 40,653 |  |  |  |  |
Common stock issued, shares |  |  | 34,729 |  |  |  |  |  |
Compensatory element of stock options | 622,120 |  |  | 622,120 |  |  |  |  |
Net income | 3,624,596 |  |  |  |  |  |  | 3,624,596 |
Ending balance at Nov. 30, 2020 | $ (2,665,135) |  | $ 136,336 | $ 36,581,600 | $ (20,563,357) |  |  | $ (18,819,714) |
Ending balance, shares at Nov. 30, 2020 |  |  | 13,633,638 |  |  |  |  |  |

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