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Earnings Per Share | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Earnings Per Share | 23. Earnings Per Share The following table sets forth the computation of basic and diluted earnings per share:
Year Ended December 31 (in thousands except per share data) |  | 2020 |  |  | 2019 |  |  | 2018 |
Numerator: |  |  |  |  |  |  |  |  |
Net income |  | $ | 59,504 |  |  | $ | 64,540 |  |  | $ | 59,228 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares |  |  | 17,748 |  |  |  | 17,724 |  |  |  | 17,687 |
Diluted earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
Dilutive effect of equity grants |  |  | 8 |  |  |  | 16 |  |  |  | 16 |
Adjusted weighted average shares |  |  | 17,756 |  |  |  | 17,740 |  |  |  | 17,703 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share |  | $ | 3.35 |  |  | $ | 3.64 |  |  | $ | 3.35 |
Diluted earnings per share |  |  | 3.35 |  |  |  | 3.64 |  |  |  | 3.35 |
There were no options to purchase common shares that were excluded from the diluted calculations above for the years ended December 31, 2020, 2019, and 2018. In addition to in-the-money stock options, unvested restricted stock grants were also used in the calculation of diluted earnings per share based on the treasury method.

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