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Note 2 - Net Income Per Share | 6 Months Ended
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Jun. 30, 2020
Earnings Per Share [Abstract] |
Net Income Per Share | Net Income (Loss) Per Share Basic net income (loss) per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding, while diluted net income (loss) per share is computed by dividing net income (loss) attributable to common stockholders by the sum of the weighted-average number of common shares outstanding and the weighted-average number of dilutive potential common shares. Dilutive potential common shares relate to our share-based compensation arrangements. The calculation of basic and diluted net income (loss) per share is as follows:
| Three Months Ended June 30, |  |  |  | Six Months Ended June 30, |  |
(In thousands, except per-share amounts) | 2020 |  | 2019 |  | 2020 |  | 2019
Net income (loss)—basic and diluted | $ | (29,951) |  |  | $ | 166,730 |  |  | $ | 110,510 |  |  | $ | 337,687 |
Average common shares outstanding—basic (1) | 193,299 |  |  | 208,097 |  |  | 197,545 |  |  | 211,264 |
Dilutive effect of share-based compensation arrangements (2) | — |  |  | 5,506 |  |  | 1,201 |  |  | 5,236 |
Adjusted average common shares outstanding—diluted | 193,299 |  |  | 213,603 |  |  | 198,746 |  |  | 216,500 |
Net income (loss) per share: |  |  |  |  |  |  |
Basic | $ | (0.15) |  |  | $ | 0.80 |  |  | $ | 0.56 |  |  | $ | 1.60 |
Diluted | $ | (0.15) |  |  | $ | 0.78 |  |  | $ | 0.56 |  |  | $ | 1.56 |
______________________ (1)Includes the impact of fully vested shares under our share-based compensation programs. (2)There were no dilutive shares for the three months ended June 30, 2020, as a result of our net loss for the period. The following number of shares of our common stock equivalents issued under our share-based compensation arrangements were not included in the calculation of diluted net income (loss) per share because they were anti-dilutive:
| Three Months Ended June 30, |  |  |  | Six Months Ended June 30, |  |
(In thousands) | 2020 |  | 2019 |  | 2020 |  | 2019
Shares of common stock equivalents | 2,295 |  |  | 168 |  |  | 1,213 |  |  | 168 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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