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Earnings Per Share | 9 Months Ended
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Sep. 30, 2019
Earnings Per Share [Abstract] |
Earnings Per Share |
4. | Earnings Per Share
The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2019 and 2018 (in thousands, except per share amounts):
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to Acadia Healthcare Company, Inc. |  | $ | 42,566 |  |  | $ | 46,232 |  |  | $ | 120,177 |  |  | $ | 155,887 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding for basic earnings per share |  |  | 87,649 |  |  |  | 87,344 |  |  |  | 87,591 |  |  |  | 87,233 |
Effect of dilutive instruments |  |  | 210 |  |  |  | 193 |  |  |  | 214 |  |  |  | 153 |
Shares used in computing diluted earnings per common share |  |  | 87,859 |  |  |  | 87,537 |  |  |  | 87,805 |  |  |  | 87,386 |
Earnings per share attributable to Acadia Healthcare Company, Inc. stockholders: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.49 |  |  | $ | 0.53 |  |  | $ | 1.37 |  |  | $ | 1.79 |
Diluted |  | $ | 0.48 |  |  | $ | 0.53 |  |  | $ | 1.37 |  |  | $ | 1.78 |
Approximately 1.9 million and 1.6 million shares of common stock issuable upon exercise of outstanding stock option awards were excluded from the calculation of diluted earnings per share for the three months ended September 30, 2019 and 2018, respectively, because their effect would have been anti-dilutive. Approximately 2.4 million and 1.9 million shares of common stock issuable upon exercise of outstanding stock option awards were excluded from the calculation of diluted earnings per share for the nine months ended September 30, 2019 and 2018, respectively, because their effect would have been anti-dilutive.

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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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