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STOCK-BASED COMPENSATION | 12 Months Ended
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Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
STOCK-BASED COMPENSATION | STOCK-BASED COMPENSATION Spire’s 2015 incentive plan, The Laclede Group 2015 Equity Incentive Plan (the 2015 Plan), was approved at the annual meeting of shareholders of Spire on January 29, 2015. The purpose of the 2015 Plan is to encourage directors, officers, and employees of the Company and its subsidiaries to contribute to the Company’s success and align their interests with that of shareholders. To accomplish this purpose, the Compensation Committee (Committee) of the Board of Directors may grant awards under the 2015 Plan that may be earned by achieving performance objectives and/or other criteria as determined by the Committee. Under the terms of the 2015 Plan, officers and employees of the Company and its subsidiaries, as determined by the Committee, are eligible to be selected for awards. The 2015 Plan provides for restricted stock, restricted stock units, qualified and non-qualified stock options, stock appreciation rights, and performance shares payable in stock, cash, or a combination of both. The 2015 Plan generally provides a minimum vesting period of at least three years for each type of award, with pro rata vesting permitted during the minimum three-year vesting period. The maximum number of shares reserved for issuance under the 2015 Plan is 1,000,000. The 2015 Plan replaced The Laclede Group 2006 Equity Incentive Plan (the 2006 Plan), which in turn replaced The Laclede Group, Inc. 2002 Equity Incentive Plan (the 2002 Plan). Shares reserved under the 2006 Plan and the 2002 Plan, other than those needed for outstanding awards, were canceled upon shareholder approval of the 2015 Plan. The Company issues new shares to satisfy employee restricted stock awards and stock option exercises. Restricted Stock Awards During fiscal 2017, the Company granted 196,400 performance-contingent restricted share units to executive officers and key employees at a weighted average grant date fair value of $45.01 per share. This number represents the maximum shares that can be earned pursuant to the terms of the awards. The share units have a performance period ending September 30, 2019. While the participants have no interim voting rights on these share units, dividends accrue during the performance period and are paid to the participants upon vesting, but are subject to forfeiture if the underlying share units do not vest. The number of share units that will ultimately vest is dependent upon the attainment of certain levels of earnings and other strategic goals, as well as the Company’s level of total shareholder return (TSR) during the performance period relative to a comparator group of companies. This TSR provision is considered a market condition under GAAP and is discussed further below. The weighted average grant date fair value of performance-contingent restricted shares and share units granted during fiscal years 2016 and 2015 was $45.95 and $36.69 per share, respectively. Fiscal 2017 activity of restricted stock and restricted stock units subject to performance and/or market conditions is presented below:
| Shares/ Units |  | Weighted Average Grant Date Fair Value Per Share
Nonvested at September 30, 2016 | 510,583 |  |  | $ | 40.37 |
Granted (maximum shares that can be earned) | 196,400 |  |  | $ | 45.01 |
Vested | (78,825 | ) |  | $ | 42.37 |
Forfeited | (64,128 | ) |  | $ | 33.03 |
Nonvested at September 30, 2017 (at maximum) | 564,030 |  |  | $ | 42.51 |
Nonvested at September 30, 2017 (at target) | 282,015 |  |  | $ | 56.32 |
During fiscal 2017, the Company granted 33,240 shares of time-vested restricted stock to executive officers and key employees at a weighted average grant date fair value of $63.05 per share. Unless forfeited based on terms of the agreements, these shares will vest in fiscal 2020. In the interim, participants receive full voting rights and dividends, which are not subject to forfeiture. The weighted average grant date fair value of time-vested restricted stock and restricted stock units awarded to employees during fiscal years 2016 and 2015 was $59.40 and $50.90 per share, respectively. During fiscal 2017, the Company granted 10,850 shares of time-vested restricted stock to non-employee directors at a weighted average grant date fair value of $63.45 per share. These shares vested in fiscal 2017, six months after the grant date. The weighted average grant date fair value of restricted stock awarded to non-employee directors during fiscal years 2016 and 2015 was $63.93 and $54.66 per share, respectively. Time-vested restricted stock and stock unit activity for fiscal 2017 is presented below:
| Shares/ Units |  | Weighted Average Grant Date Fair Value Per Share
Nonvested at September 30, 2016 | 132,779 |  |  | $ | 49.83 |
Granted | 44,090 |  |  | $ | 63.15 |
Vested | (58,200 | ) |  | $ | 47.67 |
Forfeited | (7,729 | ) |  | $ | 55.58 |
Nonvested at September 30, 2017 | 110,940 |  |  | $ | 55.85 |
For restricted stock and stock units (performance-contingent and time-vested) that vested during fiscal years 2017, 2016, and 2015, the Company withheld 35,514 shares, 30,712 shares, and 31,688, respectively, at weighted average prices of $63.83, $57.29, and $50.65 per share, respectively, pursuant to elections by employees to satisfy tax withholding obligations. The total fair value of restricted stock (performance-contingent and time-vested) that vested during fiscal years 2017, 2016, and 2015 was $8.9, $6.3, and $6.4, respectively, and the related tax benefit was $3.3, $2.4, and $2.4, respectively. None of the tax benefits have been realized. Stock Option Awards No stock options were granted during fiscal years 2017, 2016, and 2015. There was no stock option activity in fiscal 2017, as all outstanding stock options either vested or forfeited in fiscal 2016. During fiscal 2016, cash received from the exercise of stock options was $0.7 and the related intrinsic value was $0.7. During fiscal 2015, cash received from the exercise of stock options was $1.5 and the related intrinsic value was $0.9. Related tax benefits were not material in any of those years. Equity Compensation Costs Compensation cost for performance-contingent restricted stock and stock unit awards is based upon the probable outcome of the performance conditions. For shares or units that do not vest or that are not expected to vest due to the outcome of the performance conditions (excluding market conditions), no compensation cost is recognized and any previously recognized compensation cost is reversed. The fair value of awards of performance-contingent and time-vested restricted stock and restricted stock units, not subject to the TSR provision, are estimated using the closing price of the Company’s stock on the grant date. For those awards that do not pay dividends during the vesting period, the estimate of fair value is reduced by the present value of the dividends expected to be paid on the Company’s common stock during the performance period, discounted using an appropriate United States (US) Treasury yield. For shares subject to the TSR provision, the estimated impact of this market condition is reflected in the grant date fair value per share of the awards. Accordingly, compensation cost is not reversed to reflect any actual reductions in the awards that may result from the TSR provision. However, if the Company’s TSR during the performance period ranks below the level specified in the award agreements, relative to a comparator group of companies, and the Committee elects not to reduce the award (or reduce by a lesser amount), this election would be accounted for as a modification of the original award and additional compensation cost would be recognized at that time. The grant date fair value of the awards subject to the TSR provision awarded during fiscal years 2017, 2016, and 2015 was valued by a Monte Carlo simulation model that assessed the probabilities of various TSR outcomes. The significant assumptions used in the Monte Carlo simulations are as follows:
| 2017 |  | 2016 |  | 2015
Risk-free interest rate | 1.39% |  | 1.14% |  | 0.83%
Expected dividend yield of stock | — |  | — |  | —
Expected volatility of stock | 16.3% |  | 15.0% |  | 14.0%
Vesting period | 2.8 years |  | 2.8 years |  | 2.8 years
The risk-free interest rate was based on the yield on US Treasury securities matching the vesting period. A zero percent dividend yield was used, which is mathematically equivalent to the assumption that dividends are reinvested as they are paid. The expected volatility is based on the historical volatility of the Company’s stock. Volatility assumptions were also made for each of the companies included in the comparator group. The vesting period is equal to the performance period set forth in the terms of the award. The amounts of compensation cost recognized for share-based compensation arrangements are presented below:
| 2017 |  | 2016 |  | 2015
Total compensation cost | $ | 7.4 |  |  | $ | 6.7 |  |  | $ | 6.7 |
Compensation cost capitalized | (3.3 | ) |  | (2.2 | ) |  | (1.8 | )
Compensation cost recognized in net income | $ | 4.1 |  |  | $ | 4.5 |  |  | $ | 4.9 |
Income tax benefit recognized in net income | (1.5 | ) |  | (1.7 | ) |  | (1.9 | )
Compensation cost recognized in net income, net of income tax | $ | 2.6 |  |  | $ | 2.8 |  |  | $ | 3.0 |
As of September 30, 2017, there was $8.9 of total unrecognized compensation cost related to non-vested share-based compensation arrangements. That cost is expected to be recognized over a weighted average period of 1.8 years.

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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=96867065&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=96867065&loc=d3e5047-113901 + Details
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