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Earnings Per Share | 6 Months Ended
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Jun. 30, 2019
Earnings Per Share [Abstract] |
Earnings Per Share | Note 13. Earnings Per Share The following table sets forth the computation of basic and diluted earnings per share from continuing operations for the three and six months ended June 30, 2019 and 2018 (in thousands, except per share data).
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 16,614 |  |  | $ | 13,121 |  |  | $ | 54,179 |  |  | $ | 48,931 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 54,090 |  |  |  | 54,594 |  |  |  | 54,188 |  |  |  | 54,334 |
Diluted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options (1) |  |  | 1,188 |  |  |  | 1,550 |  |  |  | 1,247 |  |  |  | 1,500 |
Restricted stock awards (1) |  |  | 176 |  |  |  | 290 |  |  |  | 225 |  |  |  | 329 |
Contingent shares (2) |  |  | 41 |  |  |  | 3 |  |  |  | 41 |  |  |  | 3 |
Diluted weighted average common shares outstanding (3) |  |  | 55,495 |  |  |  | 56,437 |  |  |  | 55,701 |  |  |  | 56,166 |
Basic earnings per share from continuing operations |  | $ | 0.31 |  |  | $ | 0.24 |  |  | $ | 1.00 |  |  | $ | 0.90 |
Diluted earnings per share from continuing operations |  | $ | 0.30 |  |  | $ | 0.23 |  |  | $ | 0.97 |  |  | $ | 0.87 |
| (1) | A total of 0.5 million and 0.5 million share based awards were excluded from the calculation of diluted earnings per share for the three and six months ended June 30, 2019, respectively, and a total of 0.4 million and 0.7 million share based awards were excluded from the calculation of diluted earnings per share for the three and six months ended June 30, 2018, respectively, as their effect would be anti-dilutive.
| (2) | Contingent shares represent additional shares to be issued for purchase price earned by former owners of businesses acquired by us once future considerations have been met. Refer to Note 14, Acquisitions, for further details.
| (3) | The denominator used in calculating diluted earnings per share did not include 173 thousand PSUs granted in March 2019. As of June 30, 2019, the performance conditions associated with these PSUs were not met and consequently none of these PSUs were considered as issuable for the three months and six months periods ended June 30, 2019.

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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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