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Acquisitions (Tables) | 3 Months Ended
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Mar. 31, 2019
Business Combinations [Abstract] |
Business Acquisition, Pro Forma Information | The summary below (in millions, except for per share data) presents pro forma unaudited condensed consolidated results of operations for the three months ended March 31, 2018 as if the acquisition of ECS by the Company and the acquisition of a business by ECS in April 2017, both occurred on January 1, 2017. The pro forma unaudited condensed consolidated results give effect to, among other things: (i) amortization of intangible assets, (ii) stock-based compensation expense and the related dilution for restricted stock units granted to ECS employees, (iii) interest expense on acquisition-related debt and (iv) the exclusion of nonrecurring expenses incurred by ECS prior to its acquisition by the Company for ECS’ acquisition-related activities and costs incurred in the sale of ECS to the Company. The pro forma results do not include pre-acquisition results of DHA due to its size. The pro forma results are not necessarily indicative of the operating results that would have occurred had the acquisitions been consummated as of the date indicated, nor are they necessarily indicative of future operating results.
Revenues |  | $ | 834.2 |
Income from continuing operations |  | $ | 34.6 |
Net income |  | $ | 34.5 |
Earnings per share: |  |
Basic |  | $ | 0.66 |
Diluted |  | $ | 0.65 |
Number of shares and share equivalents used to calculate earnings per share: |  |
Basic |  | 52.2 |
Diluted |  | 52.9 |

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