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Consolidated Statements of Stockholders' Deficit - USD ($) | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Treasury Stock [Member] | Other Comprehensive Income [Member] | Accumulated Deficit [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, shares at Nov. 30, 2018 |  | 13,596,409 |  |  |  |
Cumulative-effect adjustment due to the adoption of ASU 2016-01 | 341,000 |  |  |  |  |
Ending balance at Feb. 28, 2019 | (8,234,292) | $ 135,989 | 35,660,039 | (19,571,113) | 0 | (24,459,207)
Ending balance, shares at Feb. 28, 2019 |  | 13,598,909 |  |  |  |
Beginning balance at Nov. 30, 2018 | (8,908,298) | $ 135,964 | 35,515,382 | (19,571,113) | 340,984 | (25,329,515)
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 | 225,809 |  | 225,809 |  |  |
Cumulative-effect adjustment due to the adoption of ASU 2016-01 | Accounting Standards Update 2016-01 [Member] |  |  |  |  | (340,984) | 340,984
ASC 606 adoption adjustment, net of tax | 253,447 |  |  |  |  | 253,447
Net income | 329,550 |  |  |  |  | 329,550
Ending balance at May. 31, 2019 | (8,093,792) | $ 135,989 | 35,746,866 | (19,571,113) | 0 | (24,405,534)
Ending balance, shares at May. 31, 2019 |  | 13,598,909 |  |  |  |
Beginning balance at Feb. 28, 2019 | (8,234,292) | $ 135,989 | 35,660,039 | (19,571,113) | 0 | (24,459,207)
Beginning balance, shares at Feb. 28, 2019 |  | 13,598,909 |  |  |  |
Compensatory element of stock options | 86,827 |  | 86,827 |  |  |
Net income | 53,673 |  |  |  |  | 53,673
Ending balance at May. 31, 2019 | (8,093,792) | $ 135,989 | 35,746,866 | (19,571,113) | 0 | (24,405,534)
Ending balance, shares at May. 31, 2019 |  | 13,598,909 |  |  |  |
Beginning balance at Nov. 30, 2019 | (6,952,851) | $ 135,989 | 35,918,827 | (20,563,357) | 0 | (22,444,310)
Beginning 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 | 288,752 |  | 288,752 |  |  |
Net income | 1,640,304 |  |  |  |  | 1,640,304
Ending balance at May. 31, 2020 | (4,982,795) | $ 136,336 | 36,248,232 | (20,563,357) | 0 | (20,804,006)
Ending balance, shares at May. 31, 2020 |  | 13,633,638 |  |  |  |
Beginning balance at Feb. 29, 2020 | (6,000,627) | $ 136,336 | 36,183,738 | (20,563,357) | 0 | (21,757,344)
Beginning balance, shares at Feb. 29, 2020 |  | 13,633,638 |  |  |  |
Compensatory element of stock options | 64,494 |  | 64,494 |  |  |
Net income | 953,338 |  |  |  |  | 953,338
Ending balance at May. 31, 2020 | $ (4,982,795) | $ 136,336 | $ 36,248,232 | $ (20,563,357) | $ 0 | $ (20,804,006)
Ending balance, shares at May. 31, 2020 |  | 13,633,638 |  |  |  |

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