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Note F - Earnings Per Share | 12 Months Ended
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Dec. 31, 2021
Notes to Financial Statements |
Earnings Per Share [Text Block] | NOTE F—EARNINGS PER SHARE Basic net loss per share has been computed using the weighted-average number of shares of common stock outstanding during the period. Diluted net loss per share has been computed using the weighted-average number of shares of common stock and dilutive potential common shares from options and restricted stock units outstanding during the period. In periods with net losses, normally dilutive shares become anti-dilutive. Therefore, basic and dilutive earnings per share are the same. The following table presents the computation of the basic and diluted net loss per share for the periods indicated (in thousands):
|  | Year ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  | $ | (54,162 | ) |  | $ | (58,452 | ) |  | $ | (66,049 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares used to compute net loss per share |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 26,912 |  |  |  | 21,867 |  |  |  | 19,982 |
Effect of dilutive options and restricted stock units |  |  | — |  |  |  | — |  |  |  | — |
Diluted |  |  | 26,912 |  |  |  | 21,867 |  |  |  | 19,982 |
Net loss per share |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (2.01 | ) |  | $ | (2.67 | ) |  | $ | (3.31 | )
Diluted |  | $ | (2.01 | ) |  | $ | (2.67 | ) |  | $ | (3.31 | )
The following potentially dilutive securities were excluded from diluted net loss per share as their effect would have been antidilutive (in thousands):
|  | As of December 31, |
|  | 2021 |  |  | 2020 |
Employee stock options |  |  | 3 |  |  |  | 19 |
Restricted stock units |  |  | 3 |  |  |  | 5 |
Shares for convertible senior notes |  |  | 4,587 |  |  |  | 4,587 |
Total antidilutive shares |  |  | 4,593 |  |  |  | 4,611 |

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