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Earnings per Share (Tables) | 3 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share |
Amounts attributable to MSA Safety Incorporated common shareholders: |  | Three Months Ended March 31,
(In thousands, except per share amounts) |  | 2018 |  | 2017
Net income |  | $ | 32,371 |  |  | $ | 14,413 |
Preferred stock dividends |  | (10 | ) |  | (10 | )
Net income available to common equity |  | 32,361 |  |  | 14,403 |
Dividends and undistributed earnings allocated to participating securities |  | (32 | ) |  | (17 | )
Net income available to common shareholders |  | 32,329 |  |  | 14,386 |
Basic weighted-average shares outstanding |  | 38,216 |  |  | 37,766 |
Stock options and other stock compensation |  | 562 |  |  | 827 |
Diluted weighted-average shares outstanding |  | 38,778 |  |  | 38,593 |
Antidilutive stock options |  | — |  |  | — |
Earnings per share: |  |  |  |
Basic |  | $ | 0.85 |  |  | $ | 0.38 |
Diluted |  | $ | 0.83 |  |  | $ | 0.37 |

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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://www.xbrl.org/2003/role/presentationRef -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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