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Earnings Per Share | 3 Months Ended
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Mar. 31, 2022
Earnings Per Share [Abstract] |
EARNINGS PER SHARE | EARNINGS PER SHARE The following table sets forth the computation of the basic and diluted earnings per share (in thousands, except per share data):
| Three months ended March 31,
| 2021 |  | 2022
Numerator for basic and diluted earnings per share: |  |  |
Net income | $ | 12,933 |  |  | $ | 16,402 |
Less: Earnings allocated to unvested restricted stock | (27) |  |  | (15) |
Income attributable to common stockholders | $ | 12,906 |  |  | $ | 16,387 |
Denominator: |  |  |
Denominator for basic earnings per common share - weighted average shares outstanding | 17,965 |  |  | 15,244 |
Effect of dilutive securities: |  |  |
Stock options | 234 |  |  | 409 |
Performance awards | — |  |  | 716 |
Denominator for diluted earnings per common share - weighted average shares outstanding | 18,199 |  |  | 16,369 |
Basic earnings per common share: | $ | 0.72 |  |  | $ | 1.07 |
Diluted earnings per common share: | $ | 0.71 |  |  | $ | 1.00 |
For the three months ended March 31, 2021 and 2022, no stock options were excluded from the computation of diluted earnings per share. Our performance awards are considered to be contingently issuable shares because their issuance is contingent upon the satisfaction of certain performance and service conditions. At March 31, 2022, we had satisfied certain performance criteria for the first, second and third predetermined growth targets of our performance awards to be considered outstanding. Therefore, we included these awards in the computation of diluted earnings per share as of the beginning of the reporting period.

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