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Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands | Options One [Member] Preferred Stock [Member] Series A Preferred Stock [Member] | Options One [Member] Common Stock [Member] | Options One [Member] Treasury Stock [Member] | Options One [Member] Additional Paid-in Capital [Member] | Options One [Member] Retained Earnings [Member] | Options One [Member] AOCI Attributable to Parent [Member] | Options One [Member] | Options Two [Member] Preferred Stock [Member] Series A Preferred Stock [Member] | Options Two [Member] Common Stock [Member] | Options Two [Member] Treasury Stock [Member] | Preferred Stock [Member] Series A Preferred Stock [Member] | Common Stock [Member] | Treasury Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | AOCI Attributable to Parent [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Nov. 30, 2020 |  |  |  |  |  |  |  |  |  |  | 1,391 | 14,852,023 | 0 |  |  |  |
Balance at Nov. 30, 2020 |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 15 | $ 0 | $ 58,581 | $ (50,215) | $ 28 | $ 8,409
Stock-based compensation |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 1,546 | 0 | 0 | 1,546
Issuance of common stock pursuant to exercise of stock options (in shares) | 0 | 22,667 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock pursuant to exercise of stock options | $ 0 | $ 0 | $ 0 | $ 35 | $ 0 | $ 0 | $ 35 |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 | 1,765 | 0 | 1,765
Foreign currency translation adjustment for the period |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | 0 | 0 | 178 | 178
Conversion of preferred shares and accrued dividends on preferred shares (in shares) |  |  |  |  |  |  |  |  |  |  | (1,391) | 5,332,147 | 0 |  |  |  |
Conversion of preferred shares and accrued dividends on preferred shares |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 5 | $ 0 | 1,038 |  |  | 1,043
Warrant exercises |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 1,217 | 0 | 0 | 1,217
Dividends declared on preferred shares |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,043) |  |  | (1,043)
Balance (in shares) at May. 31, 2021 |  |  |  |  |  |  |  |  |  |  | 0 | 20,693,521 | 0 |  |  |  |
Balance at May. 31, 2021 |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 20 | $ 0 | 61,374 | (48,450) | 206 | 13,150
Cancellation of shares |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | 0 | 0 | 0 | 0
Balance (in shares) at Feb. 28, 2021 |  |  |  |  |  |  |  |  |  |  | 1,391 | 14,920,109 | 0 |  |  |  |
Balance at Feb. 28, 2021 |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 15 | $ 0 | 59,430 | (50,487) | 86 | 9,044
Stock-based compensation |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 853 | 0 | 0 | 853
Issuance of common stock pursuant to exercise of stock options (in shares) | 0 | 8,000 | 0 |  |  |  |  | 0 | 433,265 | 0 |  |  |  |  |  |  |
Issuance of common stock pursuant to exercise of stock options | $ 0 | $ 0 | $ 0 | $ 13 | $ 0 | $ 0 | $ 13 |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 | 2,037 | 0 | 2,037
Foreign currency translation adjustment for the period |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | 0 | 0 | 120 | 120
Conversion of preferred shares and accrued dividends on preferred shares (in shares) |  |  |  |  |  |  |  |  |  |  | (1,391) | 5,332,147 | 0 |  |  |  |
Conversion of preferred shares and accrued dividends on preferred shares |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 5 | $ 0 | 1,038 | 0 | 0 | 1,043
Warrant exercises |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 1,083 | 0 | 0 | 1,083
Dividends declared on preferred shares |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | (1,043) | 0 | 0 | (1,043)
Balance (in shares) at May. 31, 2021 |  |  |  |  |  |  |  |  |  |  | 0 | 20,693,521 | 0 |  |  |  |
Balance at May. 31, 2021 |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 20 | $ 0 | 61,374 | (48,450) | 206 | 13,150
Balance (in shares) at Nov. 30, 2021 |  |  |  |  |  |  |  |  |  |  | 0 | 23,754,096 | 0 |  |  |  |
Balance at Nov. 30, 2021 |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 23 | $ 0 | 119,589 | (53,498) | (16) | 66,098
Stock-based compensation |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | 1,372 | 0 | 0 | $ 1,372
Issuance of common stock pursuant to exercise of stock options (in shares) |  |  |  |  |  |  |  |  |  |  | 0 | 250,250 | 0 |  |  |  | 250,250
Issuance of common stock pursuant to exercise of stock options |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | 457 | 0 | 0 | $ 457
Repurchase of common shares under Stock Buyback Plan (in shares) |  |  |  |  |  |  |  |  |  |  | 0 | 0 | (1,779,958) |  |  |  |
Repurchase of common shares under Stock Buyback Plan |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ (15,000) | 0 | 0 | 0 | (15,000)
Reclassification of stock-based compensation plan modification |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | (1,043) | 0 | 0 | (1,043)
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 0 | (6,217) | 0 | (6,217)
Foreign currency translation adjustment for the period |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | 0 | 0 | 14 | 14
Balance (in shares) at May. 31, 2022 |  |  |  |  |  |  |  |  |  |  | 0 | 24,008,219 | (1,779,958) |  |  |  |
Balance at May. 31, 2022 |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 23 | $ (15,000) | 120,375 | (59,715) | (1) | 45,682
Issuance of common stock pursuant to exercise of restricted stock units (in shares) |  |  |  |  |  |  |  |  |  |  | 0 | 3,873 | 0 |  |  |  |
Issuance of common stock pursuant to exercise of restricted stock units |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | 0 | 0 | 0 | 0
Balance (in shares) at Feb. 28, 2022 |  |  |  |  |  |  |  |  |  |  | 0 | 23,960,588 | (296,168) |  |  |  |
Balance at Feb. 28, 2022 |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 23 | $ (2,654) | 120,767 | (56,719) | (10) | 61,407
Stock-based compensation |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | 560 | 0 | 0 | 560
Issuance of common stock pursuant to exercise of stock options (in shares) |  |  |  |  |  |  |  |  |  |  | 0 | 47,631 | 0 |  |  |  |
Issuance of common stock pursuant to exercise of stock options |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | 90 | 0 | 0 | 90
Repurchase of common shares under Stock Buyback Plan (in shares) |  |  |  |  |  |  |  |  |  |  | 0 | 0 | (1,483,790) |  |  |  |
Repurchase of common shares under Stock Buyback Plan |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ (12,346) | 0 | 0 | 0 | (12,346)
Reclassification of stock-based compensation plan modification |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | (1,043) | 0 | 0 | (1,043)
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  | 0 | (2,996) | 0 | (2,996)
Foreign currency translation adjustment for the period |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | 0 |  | 9 | 9
Balance (in shares) at May. 31, 2022 |  |  |  |  |  |  |  |  |  |  | 0 | 24,008,219 | (1,779,958) |  |  |  |
Balance at May. 31, 2022 |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 23 | $ (15,000) | $ 120,375 | $ (59,715) | $ (1) | $ 45,682

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