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Consolidated Quarterly Data (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Consolidated Quarterly Data (Unaudited) |
| Consolidated Quarterly Data (Unaudited)
| 2017
| Q1 |  | Q2 |  | Q3 |  | Q4
Net Sales | $ | 191,059 |  |  | $ | 270,791 |  |  | $ | 261,921 |  |  | $ | 279,295 |
Gross Profit | 79,736 |  |  | 104,554 |  |  | 104,604 |  |  | 115,527 |
Net (Loss) Earnings Attributable to Tennant Company | (3,957 | ) |  | (2,591 | ) |  | 3,559 |  |  | (3,206 | )
Basic (Loss) Earnings Attributable to Tennant Company per Share | $ | (0.22 | ) |  | $ | (0.15 | ) |  | $ | 0.20 |  |  | $ | (0.18 | )
Diluted (Loss) Earnings Attributable to Tennant Company per Share | $ | (0.22 | ) |  | $ | (0.15 | ) |  | $ | 0.20 |  |  | $ | (0.18 | )
| 2016
| Q1 |  | Q2 |  | Q3 |  | Q4
Net Sales | $ | 179,864 |  |  | $ | 216,828 |  |  | $ | 200,134 |  |  | $ | 211,746 |
Gross Profit | 77,502 |  |  | 95,289 |  |  | 85,295 |  |  | 93,509 |
Net Earnings Attributable to Tennant Company | 4,439 |  |  | 15,328 |  |  | 11,477 |  |  | 15,370 |
Basic Earnings Attributable to Tennant Company per Share | $ | 0.25 |  |  | $ | 0.88 |  |  | $ | 0.66 |  |  | $ | 0.88 |
Diluted Earnings Attributable to Tennant Company per Share | $ | 0.25 |  |  | $ | 0.85 |  |  | $ | 0.64 |  |  | $ | 0.85 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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