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Quarterly Financial Data (unaudited) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Data (unaudited) [Abstract] |
Quarterly Financial Data (unaudited) | Note 20. Quarterly Financial Data (unaudited)
|  | 2017 quarters |
|  | First |  |  | Second |  |  | Third |  |  | Fourth |
|  | (millions of dollars, except per share amounts) |
Net sales by segment |  |  |  |  |  |  |  |  |  |  |  |
Specialty Minerals segment |  | $ | 146.2 |  |  | $ | 147.0 |  |  | $ | 147.7 |  |  | $ | 143.9 |
Performance Materials segment |  |  | 169.9 |  |  |  | 180.3 |  |  |  | 188.8 |  |  | $ | 195.8 |
Refractories segment |  |  | 70.2 |  |  |  | 68.9 |  |  |  | 69.0 |  |  | $ | 71.3 |
Energy Services segment |  |  | 18.7 |  |  |  | 17.9 |  |  |  | 19.0 |  |  | $ | 21.1 |
Net sales |  |  | 405.0 |  |  |  | 414.1 |  |  |  | 424.5 |  |  |  | 432.1 |
Gross profit |  |  | 113.7 |  |  |  | 119.7 |  |  |  | 119.3 |  |  |  | 114.5 |
Income from operations |  |  | 61.7 |  |  |  | 68.5 |  |  |  | 66.8 |  |  |  | 45.7 |
Consolidated net income |  |  | 35.6 |  |  |  | 43.8 |  |  |  | 42.8 |  |  |  | 76.7 |
Net income attributable to Minerals Technologies Inc. (MTI) |  |  | 34.6 |  |  |  | 43.0 |  |  |  | 41.7 |  |  |  | 75.8 |
Basic earnings per share attributable to MTI shareholders |  | $ | 0.99 |  |  | $ | 1.23 |  |  | $ | 1.18 |  |  | $ | 2.14 |
Diluted earnings per share attributable to MTI shareholders |  | $ | 0.97 |  |  | $ | 1.21 |  |  | $ | 1.17 |  |  | $ | 2.12 |
Market price range per share of common stock: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
High |  | $ | 83.70 |  |  | $ | 80.20 |  |  | $ | 75.60 |  |  | $ | 73.55 |
Low |  | $ | 72.20 |  |  | $ | 70.50 |  |  | $ | 62.95 |  |  | $ | 66.40 |
Close |  | $ | 76.60 |  |  | $ | 73.20 |  |  | $ | 70.65 |  |  | $ | 68.85 |
Dividends paid per common share |  | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | 0.05 |
|  | 2016 quarters |
|  | First |  |  | Second |  |  | Third |  |  | Fourth |
|  | (millions of dollars, except per share amounts) |
Net sales by segment |  |  |  |  |  |  |  |  |  |  |  |
Specialty Minerals segment |  | $ | 155.6 |  |  | $ | 150.6 |  |  | $ | 147.3 |  |  | $ | 138.0 |
Performance Materials segment |  |  | 159.6 |  |  |  | 182.5 |  |  |  | 169.0 |  |  |  | 175.0 |
Refractories segment |  |  | 69.2 |  |  |  | 73.9 |  |  |  | 63.4 |  |  |  | 68.0 |
Energy Services segment |  |  | 25.8 |  |  |  | 20.0 |  |  |  | 19.8 |  |  |  | 20.3 |
Net sales |  |  | 410.2 |  |  |  | 427.0 |  |  |  | 399.5 |  |  |  | 401.3 |
Gross profit |  |  | 112.7 |  |  |  | 121.1 |  |  |  | 115.2 |  |  |  | 111.4 |
Income from operations |  |  | 57.6 |  |  |  | 39.5 |  |  |  | 67.3 |  |  |  | 56.5 |
Consolidated net income |  |  | 34.8 |  |  |  | 22.3 |  |  |  | 42.5 |  |  |  | 37.5 |
Net income attributable to MTI |  |  | 33.9 |  |  |  | 21.2 |  |  |  | 41.6 |  |  |  | 36.7 |
Basic earnings per share attributable to MTI shareholders |  | $ | 0.97 |  |  | $ | 0.61 |  |  | $ | 1.19 |  |  | $ | 1.05 |
Diluted earnings per share attributable to MTI shareholders |  | $ | 0.97 |  |  | $ | 0.60 |  |  | $ | 1.18 |  |  | $ | 1.04 |
Market price range per share of common stock: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
High |  | $ | 57.12 |  |  | $ | 61.66 |  |  | $ | 72.51 |  |  | $ | 82.90 |
Low |  | $ | 37.03 |  |  | $ | 52.53 |  |  | $ | 56.00 |  |  | $ | 66.10 |
Close |  | $ | 57.12 |  |  | $ | 57.38 |  |  | $ | 70.69 |  |  | $ | 77.25 |
Dividends paid per common share |  | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | 0.05 |

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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