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Employee Incentive Plans (Tables) | 12 Months Ended
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Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Non-cash compensation expense | Non-cash compensation expense by type of award under LTI Programs was as follows for each period presented (in millions of dollars):
| Year Ended December 31,
| 2016 |  | 2015 |  | 2014
Non-vested common shares and restricted stock units | $ | 4.7 |  |  | $ | 4.4 |  |  | $ | 3.9 |
TSR-Based Performance Shares | 5.4 |  |  | 4.0 |  |  | 1.9 |
CP-Based Performance Shares | 1.3 |  |  | — |  |  | — |
EVA-Based Performance Shares | 0.3 |  |  | 0.9 |  |  | 1.0 |
Total non-cash compensation expense | $ | 11.7 |  |  | $ | 9.3 |  |  | $ | 6.8 |
The following table presents the allocation of the charges detailed above, by segment (in millions of dollars):
| Year Ended December 31,
| 2016 |  | 2015 |  | 2014
Fabricated Products | $ | 4.2 |  |  | $ | 3.5 |  |  | $ | 3.2 |
All Other | 7.5 |  |  | 5.8 |  |  | 3.6 |
Total non-cash compensation expense | $ | 11.7 |  |  | $ | 9.3 |  |  | $ | 6.8 |
Unrecognized gross compensation cost data | Unrecognized Gross Compensation Cost Data. The following table presents unrecognized gross compensation cost data by type of award as of December 31, 2016:
| Unrecognized Gross Compensation Costs (in millions of dollars) |  | Expected Period (in years) Over Which the Remaining Gross Compensation Costs Will Be Recognized
Non-vested common shares and restricted stock units | $ | 5.9 |  |  | 1.7
TSR-Based Performance Shares | $ | 6.3 |  |  | 1.6
CP-Based Performance Shares | $ | 3.4 |  |  | 2.2
Summary of activity of non-vested common shares, restricted stock units, and performance shares | A summary of the activity with respect to non-vested common shares, restricted stock units, TSR-Based Performance Shares, CP-Based Performance Shares and EVA-Based Performance Shares for the year ended December 31, 2016 is as follows:
| Non-Vested Common Shares |  | Restricted Stock Units |  | TSR-Based Performance Shares |  | CP-Based Performance Shares |  | EVA-Based Performance Shares
| Shares |  | Weighted-Average Grant-Date Fair Value per Share |  | Units |  | Weighted-Average Grant-Date Fair Value per Unit |  | Shares |  | Weighted-Average Grant-Date Fair Value per Share |  | Shares |  | Weighted-Average Grant-Date Fair Value per Share |  | Shares |  | Weighted-Average Grant-Date Fair Value per Share
Outstanding at December 31, 2015 | 156,553 |  |  | $ | 67.20 |  |  | 5,521 |  |  | $ | 66.64 |  |  | 299,877 |  |  | $ | 89.43 |  |  | — |  |  | $ | — |  |  | 155,105 |  |  | $ | 57.76 |
Granted 1 | 9,702 |  |  | 86.11 |  |  | 59,105 |  |  | 75.29 |  |  | 95,974 |  |  | 93.02 |  |  | 63,983 |  |  | 80.46 |  |  | — |  |  | — |
Vested | (51,218 | ) |  | 65.59 |  |  | (2,097 | ) |  | 63.02 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (49,611 | ) |  | 57.76 |
Forfeited 1 | (379 | ) |  | 69.18 |  |  | (729 | ) |  | 74.49 |  |  | (1,326 | ) |  | 90.53 |  |  | (305 | ) |  | 80.46 |  |  | — |  |  | — |
Canceled 1 | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (105,494 | ) |  | 57.76 |
Outstanding at December 31, 2016 | 114,658 |  |  | $ | 69.51 |  |  | 61,800 |  |  | $ | 74.94 |  |  | 394,525 |  |  | $ | 90.30 |  |  | 63,678 |  |  | $ | 80.46 |  |  | — |  |  | $ | — |
_____________________
1. | For TSR-Based Performance Shares, CP-Based Performance Shares and EVA-Based Performance Shares, the number of shares granted and forfeited are presented at their maximum payout; and the number of shares canceled includes the number of shares that did not vest due to EVA performance results falling below those required for maximum payout. Non-vested common shares and 1,900 restricted stock units granted in 2016 were granted under the 2016 Plan.
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | The weighted-average grant-date fair value per share for shares granted by type of award was as follows for each period presented:
| Year Ended December 31,
| 2016 |  | 2015 |  | 2014
Non-vested common shares | $ | 86.11 |  |  | $ | 72.09 |  |  | $ | 66.42 |
Restricted stock units | $ | 75.29 |  |  | $ | 69.83 |  |  | $ | 67.42 |
TSR-Based Performance Shares | $ | 93.02 |  |  | $ | 95.68 |  |  | $ | 83.18 |
CP-Based Performance Shares | $ | 80.46 |  |  | $ | — |  |  | $ | — |

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- Definition Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + Details
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