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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Reconciliation Of Common Shares Used In Denominator For Computing Basic And Diluted EPS | A reconciliation of common shares used in the denominator for computing basic and diluted EPS is as follows (in thousands, except per share amounts):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Weighted average shares of common stock outstanding, used in computing basic earnings per share | 70,021 |  |  | 69,672 |  |  | 70,050 |  |  | 69,639 |
Effect of dilutive stock options and restricted stock units | 727 |  |  | — |  |  | 774 |  |  | 728 |
Weighted average shares of common stock outstanding, used in computing diluted earnings per share | 70,748 |  |  | 69,672 |  |  | 70,824 |  |  | 70,367 |
Earnings (loss) per share of common stock attributable to Columbia Sportswear Company: |  |  |  |  |  |  |
Basic | $ | 0.14 |  |  | $ | (0.17 | ) |  | $ | 0.78 |  |  | $ | 0.35 |
Diluted | $ | 0.14 |  |  | $ | (0.17 | ) |  | $ | 0.77 |  |  | $ | 0.35 |

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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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