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Weighted Average Common Shares | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Weighted Average Common Shares | 11. WEIGHTED AVERAGE COMMON SHARES Basic net income per share is calculated by dividing net income by the weighted average number of common shares outstanding for the period. Diluted earnings per share is computed by dividing net income by the weighted average number of shares assuming dilution. Dilutive common shares outstanding is computed using the Treasury Stock Method and reflects the additional shares that would be outstanding if dilutive stock options were exercised and restricted stock units were settled for common shares during the period. The weighted average number of common shares used to compute basic and diluted net income per share for the quarters ended March 31, 2019 and 2018 were as follows:
| For the Quarter Ended March 31, |
| 2019 |  |  | 2018 |
Basic common shares outstanding |  | 69,837 |  |  |  | 69,216 |
Common stock equivalents |  | 1,655 |  |  |  | 1,903 |
Diluted common shares outstanding |  | 71,492 |  |  |  | 71,119 |
For the quarters ended March 31, 2019 and 2018, certain unexercised stock option awards are excluded from our computations of diluted earnings per share, as these shares were out-of-the-money and their effect would have been anti-dilutive. The anti-dilutive options that were excluded from our computations of diluted earnings per share were 0.8 million shares for each of the quarters ended March 31, 2019 and 2018.

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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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