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(6) Earnings Per Share | 6 Months Ended
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Jun. 30, 2022
Earnings per share: |
(6) Earnings Per Share | (6) Earnings Per Share Earnings per share for the three-month and six-month periods ended June 30, 2022 and 2021 were calculated using the weighted average number of shares outstanding for the related period. The following table reconciles the number of shares used in the computations of basic and diluted earnings per share for the three-month and six-month periods ended June 30, 2022 and 2021:
Computation of earnings per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
|  | (In thousands) |  |  | (In thousands) |
Weighted average number of common shares outstanding during the period used to compute basic earnings per share |  |  | 21,370 |  |  |  | 22,842 |  |  |  | 21,296 |  |  |  | 22,791 |
Incremental common shares attributable to exercise of outstanding options and warrants |  |  | 6,317 |  |  |  | 2,288 |  |  |  | 6,647 |  |  |  | 2,257 |
Weighted average number of common shares used to compute diluted earnings per share |  |  | 27,687 |  |  |  | 25,130 |  |  |  | 27,943 |  |  |  | 25,048 |
If the anti-dilutive effects of common stock equivalents were considered, shares included in the diluted earnings per share calculation for the three-month and six-month periods ended June 30, 2022 would have included an additional 824,000 and 692,000 shares, respectively, attributable to the exercise of outstanding options and warrants. For the three-month and six-month periods ended June 30, 2021, an additional 6.0 million and 6.9 million shares, respectively, would be included in the diluted earnings per share calculation.

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