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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Schedule of Reconciliation of Shares Used in Calculating Earnings Per Basic and Diluted Shares | A reconciliation of shares used in calculating earnings per basic and diluted shares follows (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Weighted average common shares outstanding—basic | 26,150 |  |  | 25,983 |  |  | 26,103 |  |  | 25,930 |
Dilutive effect of stock-based awards | 259 |  |  | 160 |  |  | 310 |  |  | 186 |
Dilutive effect of convertible senior notes | — |  |  | 248 |  |  | — |  |  | 124 |
Weighted average common shares outstanding—diluted | 26,409 |  |  | 26,391 |  |  | 26,413 |  |  | 26,240 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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