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STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Treasury Stock [Member] | Deferred Compensation Cost [Member] | Total
--- | --- | --- | --- | --- | --- | ---
Balance beginning at Feb. 29, 2016 | $ 404,875 | $ 3,968,342 | $ 3,019,940 | $ (246,858) | $ (28,000) | $ 7,118,299
Balance beginning (in shares) at Feb. 29, 2016 | 40,487,532 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Issuance of stock based compensation | $ 1,674 | 87,984 |  |  |  | 89,658
Issuance of stock based compensation (in shares) | 167,439 |  |  |  |  |
Compensation expense related to stock options |  | 115,828 |  |  |  | 115,828
Cancellation of common stock | $ (965) | (42,428) |  |  |  | (43,393)
Cancellation of common stock (in shares) | (96,542) |  |  |  |  |
Purchase of treasury common stock |  |  |  | (97,346) |  | (97,346)
Amortization of deferred compensation cost |  |  |  |  | 28,000 | 28,000
Net income (loss) |  |  | (534,999) |  |  | (534,999)
Balance ending at Feb. 28, 2017 | $ 405,584 | 4,129,726 | 2,484,941 | (344,204) |  | 6,676,047
Balance ending (in shares) at Feb. 28, 2017 | 40,558,429 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Issuance of stock based compensation | $ 2,171 | 110,329 |  |  |  | 112,500
Issuance of stock based compensation (in shares) | 217,100 |  |  |  |  |
Compensation expense related to stock options |  | (4,417) |  |  |  | (4,417)
Cancellation of common stock | $ (440) | (18,920) |  |  |  | (19,360)
Cancellation of common stock (in shares) | (44,000) |  |  |  |  |
Net income (loss) |  |  | 904,957 |  |  | 904,957
Balance ending at Dec. 31, 2017 | $ 407,315 | $ 4,216,718 | $ 3,389,898 | $ (344,204) |  | 7,669,727
Balance ending (in shares) at Dec. 31, 2017 | 40,731,529 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) |  |  |  |  |  | 1,265,703
Balance ending at Sep. 30, 2018 |  |  |  |  |  | $ 9,139,850

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