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STOCK COMPENSATION PLANS | 9 Months Ended
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Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock Compensation Plans | NOTE 8 - STOCK COMPENSATION PLANS Employees’ Plans On June 26, 2017, the Compensation and Organization Committee of the Board of Directors approved a grant under the A&R 2015 Equity Plan to the Chief Executive Officer for the performance period commencing June 1, 2017 and ending December 31, 2019. Shares granted under the awards consisted of 0.5 million restricted share units and 0.2 million performance shares. On February 21, 2017, the Compensation and Organization Committee of the Board of Directors approved grants under the 2015 Equity Plan to certain officers and employees for the 2017 to 2019 performance period. Shares granted under the awards consisted of 0.6 million restricted share units and 0.6 million performance shares. Restricted share units granted during 2017 are subject to continued employment, are retention based, will vest December 31, 2019, and are payable in common shares at a time determined by the Compensation and Organization Committee at its discretion. Performance shares are subject to continued employment, and each performance share, if earned, entitles the holder to receive common shares within a range between a threshold and maximum number of our common shares, with the actual number of common shares earned dependent upon whether the Company achieves certain objectives and performance goals as established by the Compensation and Organization Committee. The performance share grants vest over the performance period. The performance awards granted have a performance condition that is measured on the basis of relative TSR for the period of January 1, 2017 to December 31, 2019 and the period of June 1, 2017 to December 31, 2019, for the February 21, 2017 and the June 26, 2017 grants, respectively, and measured against the constituents of the S&P Metals and Mining ETF Index and the SPDR S&P Metals and Mining ETF Index, respectively, at the beginning of the relevant performance period. The final payout will vary from zero to 200% of the original grant. Determination of Fair Value The fair value of each performance share grant is estimated on the date of grant using a Monte Carlo simulation to forecast relative TSR performance. A correlation matrix of historic and projected stock prices was developed for both the Company and our predetermined peer group of mining and metals companies. The fair value assumes that performance goals will be achieved. The expected term of the grant represents the time from the grant date to the end of the service period for each of the plan agreements. We estimate the volatility of our common shares and that of the peer group of mining and metals companies using daily price intervals for all companies. The risk-free interest rate is the rate at the grant date on zero-coupon government bonds with a term commensurate with the remaining life of the performance period. The following assumptions were utilized to estimate the fair value for the 2017 performance share grants:
Grant Date |  | Grant Date Market Price |  | Average Expected Term (Years) |  | Expected Volatility |  | Risk-Free Interest Rate |  | Dividend Yield |  | Fair Value |  | Fair Value (Percent of Grant Date Market Price)
February 21, 2017 |  | $ | 11.67 |  |  | 2.86 |  | 92.1% |  | 1.51% |  | —% |  | $ | 19.69 |  |  | 168.72%
June 26, 2017 |  | $ | 6.64 |  |  | 2.51 |  | 92.8% |  | 1.45% |  | —% |  | $ | 10.74 |  |  | 161.75%

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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