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Stock-based Compensation (Tables) | 12 Months Ended
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Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of allocation of share-based compensation costs by plan | A summary of the expense related to stock-based compensation by award type is as follows for the periods presented:
| Fiscal Year Ended September 30,
(In thousands) | 2018 |  | 2017 |  | 2016
Stock options expense | $ | 225 |  |  | $ | 274 |  |  | $ | 534 |
Restricted stock awards expense | 10,033 |  |  | 7,885 |  |  | 7,425 |
Before tax stock-based compensation expense | 10,258 |  |  | 8,159 |  |  | 7,959 |
Tax benefit | (2,622 | ) |  | (2,917 | ) |  | (2,832 | )
After tax stock-based compensation expense | $ | 7,636 |  |  | $ | 5,242 |  |  | $ | 5,127 |
Schedule of assumptions for stock option activity |
| Fiscal Year Ended September 30,
| 2018 |  | 2017 |  | 2016
Expected volatility | 21.1% - 61.2% |  |  | 32.6% - 66.0% |  |  | 29.9% - 151.2% |
Risk-free interest rate | 1.81 | % |  | 1.30 | % |  | 1.21 | %
Dividend yield | — |  |  | — |  |  | — |
Grant-date stock price | $ | 20.50 |  |  | $ | 12.51 |  |  | $ | 14.24 |
We used the following valuation assumptions for stock options granted for the periods presented:
| Fiscal Year Ended September 30,
| 2018 |  | 2017 |  | 2016
Expected life of options | 5.0 years |  |  | 5.4 years |  |  | 4.9 years |
Expected volatility | 44.71 | % |  | 50.10 | % |  | 46.49 | %
Expected dividends | — |  |  | — |  |  | — |
Weighted-average risk-free interest rate | 2.10 | % |  | 1.85 | % |  | 1.36 | %
Weighted-average fair value | $ | 8.30 |  |  | $ | 5.83 |  |  | $ | 4.03 |
Schedule of stock options and SSARs outstanding | Activity related to stock options for the periods presented is as follows:
| 2018 |  | 2017 |  | 2016
| Shares |  | Weighted- Average Exercise Price |  | Shares |  | Weighted- Average Exercise Price |  | Shares |  | Weighted- Average Exercise Price
Outstanding at beginning of period | 593,753 |  |  | $ | 14.76 |  |  | 672,669 |  |  | $ | 16.49 |  |  | 643,907 |  |  | $ | 18.13 |
Granted | 25,230 |  |  | 19.99 |  |  | 29,410 |  |  | 12.50 |  |  | 125,449 |  |  | 9.19 |
Exercised | (8,411 | ) |  | 7.52 |  |  | (2,313 | ) |  | 10.80 |  |  | — |  |  | — |
Expired | (61,967 | ) |  | 23.19 |  |  | (84,976 | ) |  | 28.45 |  |  | (86,606 | ) |  | 19.70 |
Cancelled | — |  |  | — |  |  | (480 | ) |  | 23.65 |  |  | — |  |  | — |
Forfeited | (15,553 | ) |  | 10.46 |  |  | (20,557 | ) |  | 11.97 |  |  | (10,081 | ) |  | 10.98 |
Outstanding at end of period | 533,052 |  |  | $ | 14.26 |  |  | 593,753 |  |  | $ | 14.76 |  |  | 672,669 |  |  | $ | 16.49 |
Exercisable at end of period | 479,538 |  |  | $ | 14.03 |  |  | 476,606 |  |  | $ | 15.91 |  |  | 503,594 |  |  | $ | 17.76 |
Vested or expected to vest in the future | 533,052 |  |  | $ | 14.26 |  |  | 585,186 |  |  | $ | 14.83 |  |  | 672,669 |  |  | $ | 16.49 |
Schedule of stock options and SSARS outstanding and exercisable | The following table summarizes information about stock options outstanding and exercisable as of September 30, 2018:
| Stock Options Outstanding |  | Stock Options Exercisable
Range of Exercise Price | Number Outstanding |  | Weighted-Average Contractual Remaining Life (Years) |  | Weighted-Average Exercise Price |  | Number Exercisable |  | Weighted-Average Contractual Remaining Life (Years) |  | Weighted-Average Exercise Price
$1 - $10 | 152,004 |  |  | 2.6 |  | $ | 9.77 |  |  | 152,004 |  |  | 2.6 |  | $ | 9.77 |
$11 - $15 | 207,451 |  |  | 3.2 |  | 13.33 |  |  | 177,617 |  |  | 2.7 |  | 13.37 |
$16 - $20 | 173,597 |  |  | 3.7 |  | 19.30 |  |  | 149,917 |  |  | 3.1 |  | 19.12 |
$1 - $20 | 533,052 |  |  | 3.2 |  | $ | 14.26 |  |  | 479,538 |  |  | 2.8 |  | $ | 14.03 |
Schedule of stock options exercised and vested | Information pertaining to the intrinsic value of options exercised and the fair market value of options that vested is below:
| Fiscal Year Ended September 30,
(In thousands) | 2018 |  | 2017 |  | 2016
Intrinsic value of options exercised | $ | 76 |  |  | $ | 13 |  |  | $ | — |
Fair market value of options vested | $ | 296 |  |  | $ | 482 |  |  | $ | 681 |
Schedule of nonvested stock awards and performance shares | Activity relating to all restricted stock awards for the periods presented is as follows:
| Year Ended September 30, 2018
| Performance-Based |  | Time-Based |  | Total
| Shares |  | Weighted- Average Grant Date Fair Value |  | Shares |  | Weighted- Average Grant Date Fair Value |  | Shares |  | Weighted- Average Grant Date Fair Value
Beginning of period | 668,766 |  |  | $ | 15.72 |  |  | 872,181 |  |  | $ | 16.47 |  |  | 1,540,947 |  |  | $ | 16.15 |
Granted | 165,085 |  |  | 22.40 |  |  | 277,165 |  |  | 18.98 |  |  | 442,250 |  |  | 20.26 |
Vested | — |  |  | — |  |  | (690,922 | ) |  | 17.38 |  |  | (690,922 | ) |  | 17.38 |
Forfeited | (189,066 | ) |  | 18.98 |  |  | (26,641 | ) |  | 17.02 |  |  | (215,707 | ) |  | 18.74 |
End of period | 644,785 |  |  | $ | 16.47 |  |  | 431,783 |  |  | $ | 16.60 |  |  | 1,076,568 |  |  | $ | 16.53 |
| Year Ended September 30, 2017
| Performance-Based |  | Time-Based |  | Total
| Shares |  | Weighted- Average Grant Date Fair Value |  | Shares |  | Weighted- Average Grant Date Fair Value |  | Shares |  | Weighted- Average Grant Date Fair Value
Beginning of period | 448,693 |  |  | $ | 16.71 |  |  | 807,124 |  |  | $ | 17.52 |  |  | 1,255,817 |  |  | $ | 17.23 |
Granted | 263,696 |  |  | 13.60 |  |  | 271,855 |  |  | 12.50 |  |  | 535,551 |  |  | 13.04 |
Vested | — |  |  | — |  |  | (189,029 | ) |  | 15.52 |  |  | (189,029 | ) |  | 15.52 |
Forfeited | (43,623 | ) |  | 13.11 |  |  | (17,769 | ) |  | 14.08 |  |  | (61,392 | ) |  | 13.39 |
End of period | 668,766 |  |  | $ | 15.72 |  |  | 872,181 |  |  | $ | 16.47 |  |  | 1,540,947 |  |  | $ | 16.15 |
| Year Ended September 30, 2016
| Performance-Based |  | Time-Based |  | Total
| Shares |  | Weighted- Average Grant Date Fair Value |  | Shares |  | Weighted- Average Grant Date Fair Value |  | Shares |  | Weighted- Average Grant Date Fair Value
Beginning of period | 252,022 |  |  | $ | 16.34 |  |  | 704,261 |  |  | $ | 18.97 |  |  | 956,283 |  |  | $ | 18.27 |
Granted | 231,624 |  |  | 15.43 |  |  | 259,819 |  |  | 14.04 |  |  | 491,443 |  |  | 14.69 |
Vested | — |  |  | — |  |  | (127,993 | ) |  | 18.58 |  |  | (127,993 | ) |  | 18.58 |
Forfeited | (34,953 | ) |  | 5.51 |  |  | (28,963 | ) |  | 16.78 |  |  | (63,916 | ) |  | 10.62 |
End of period | 448,693 |  |  | $ | 16.71 |  |  | 807,124 |  |  | $ | 17.52 |  |  | 1,255,817 |  |  | $ | 17.23 |

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