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Earnings per Share | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Earnings per Share | Earnings per Share Basic earnings per share (EPS) is calculated by dividing the net income by the weighted average number of shares of common stock outstanding. Diluted EPS is computed by dividing the net income by the weighted average number of shares of common stock outstanding, plus potential outstanding common stock for the period. Potential outstanding common stock includes stock options and shares underlying RSUs, but only to the extent that their inclusion is dilutive. The following table presents the calculation of basic and diluted net income per share of common stock for the years ended December 31, 2020, 2019 and 2018:
| Year Ended December 31,
(in thousands, except for share and per share amounts) | 2020 |  | 2019 |  | 2018
Numerator: |  |  |  |  |
Net income | $ | 23,337 |  |  | $ | 115,553 |  |  | $ | 25,208 |
Denominator: |  |  |  |  |
Weighted average shares outstanding, basic | 54,427,683 |  |  | 53,137,562 |  |  | 50,859,947 |
Effect of dilutive securities | 763,119 |  |  | 1,709,498 |  |  | 2,185,310 |
Weighted average shares outstanding, diluted | 55,190,802 |  |  | 54,847,060 |  |  | 53,045,257 |
Net income per share, basic and diluted: |  |  |  |  |
Basic | $ | 0.43 |  |  | $ | 2.17 |  |  | $ | 0.50 |
Diluted | $ | 0.42 |  |  | $ | 2.11 |  |  | $ | 0.48 |
Antidilutive securities excluded from calculations of diluted net income per share | 3,407,409 |  |  | 1,932,024 |  |  | 903,265 |

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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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