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v3.23.3

Stock-based Compensation Plans (Tables) | 12 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022
Share-Based Payment Arrangement [Abstract] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] | The effect of stock-based compensation on our consolidated statements of operations within Selling, general and administrative costs is presented below.
| 2023 |  | 2022 |  | 2021
| (in millions, except per share data)
Decrease in operating income | $ | 11.1 |  |  | $ | 9.9 |  |  | $ | 11.0 |
Decrease in net income | 8.7 |  |  | 7.6 |  |  | 8.2 |
Decrease in earnings per basic share | 0.06 |  |  | 0.05 |  |  | 0.05 |
Decrease in earnings per diluted share | $ | 0.06 |  |  | $ | 0.05 |  |  | $ | 0.05 |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity | Restricted stock unit activity under the 2006 Plan is summarized below.
| Restricted stock units |  | Weighted average grant date fair value per unit |  | Weighted average remaining contractual term (years) |  | Aggregate intrinsic value (millions)
Outstanding at September 30, 2020 | 408,506 |  |  | $ | 11.41 |  |  | 0.9 |  |
Granted | 220,795 |  |  | 12.29 |  |  |  |  |
Vested | (228,121) |  |  | 11.62 |  |  |  |  | $ | 2.8 |
Cancelled | (5,083) |  |  | 11.41 |  |  |  |  |
Outstanding at September 30, 2021 | 396,097 |  |  | 11.78 |  |  | 0.8 |  |
Granted | 223,379 |  |  | 13.41 |  |  |  |  |
Vested | (251,981) |  |  | 11.81 |  |  |  |  | $ | 2.8 |
Cancelled | (8,763) |  |  | 11.87 |  |  |  |  |
Outstanding at September 30, 2022 | 358,732 |  |  | 12.77 |  |  | 0.7 |  |
Granted | 625,518 |  |  | 12.78 |  |  |  |  |
Vested | (301,864) |  |  | 12.83 |  |  |  |  | $ | 7.3 |
Cancelled | (109,103) |  |  | 12.00 |  |  |  |  |
Outstanding at September 30, 2023 | 573,283 |  |  | $ | 12.88 |  |  | 0.9 |  |
Schedule of Nonvested Performance-based Units Activity [Table Text Block] | Stock-settled PRSUs activity under the 2006 Plan is summarized below.
Award date |  | Settlement year |  | Performance period |  | Grant date per unit fair value |  | Units awarded |  | Units forfeited |  | Net units |  | Performance factor |  | Shares earned
November 29, 2016 |  | 2020 |  | 2017 |  | $ | 13.26 |  |  | 59,285 |  |  | (5,279) |  |  | 54,006 |  |  | 1.000 |  | 54,006 |
|  |  |  | 2018 |  | $ | 12.50 |  |  | 59,286 |  |  | (39,910) |  |  | 19,376 |  |  | 1.357 |  | 26,294 |
|  |  |  | 2019 |  | $ | 10.53 |  |  | 59,290 |  |  | (39,909) |  |  | 19,381 |  |  | 0.645 |  | 12,501 |
January 23, 2017 |  | 2020 |  | 2017 |  | $ | 13.15 |  |  | 19,012 |  |  | — |  |  | 19,012 |  |  | 1.000 |  | 19,012 |
|  |  |  | 2018 |  | $ | 12.50 |  |  | 19,011 |  |  | — |  |  | 19,011 |  |  | 1.357 |  | 25,798 |
|  |  |  | 2019 |  | $ | 10.53 |  |  | 19,011 |  |  | — |  |  | 19,011 |  |  | 0.645 |  | 12,263 |
November 28, 2017 |  | 2021 |  | 2018 |  | $ | 12.50 |  |  | 57,092 |  |  | — |  |  | 57,092 |  |  | 1.357 |  | 77,474 |
|  |  |  | 2019 |  | $ | 10.53 |  |  | 57,092 |  |  | (4,793) |  |  | 52,299 |  |  | 0.645 |  | 33,733 |
|  |  |  | 2020 |  | $ | 11.26 |  |  | 57,104 |  |  | (21,679) |  |  | 35,425 |  |  | 0.909 |  | 32,202 |
November 27, 2018 |  | 2022 |  | 2019 |  | $ | 10.53 |  |  | 110,954 |  |  | (8,751) |  |  | 102,203 |  |  | 0.645 |  | 65,921 |
|  |  |  | 2020 |  | $ | 11.26 |  |  | 110,954 |  |  | (13,182) |  |  | 97,772 |  |  | 0.909 |  | 88,875 |
|  |  |  | 2021 |  | $ | 11.86 |  |  | 110,967 |  |  | (28,478) |  |  | 82,489 |  |  | 1.161 |  | 95,770 |
December 3, 2019 |  | 2023 |  | 2020 |  | $ | 11.26 |  |  | 69,988 |  |  | (2,391) |  |  | 67,597 |  |  | 0.909 |  | 61,446 |
|  |  |  | 2021 |  | $ | 11.86 |  |  | 69,989 |  |  | (9,614) |  |  | 60,375 |  |  | 1.161 |  | 70,096 |
|  |  |  | 2022 |  | $ | 13.81 |  |  | 69,988 |  |  | (9,614) |  |  | 60,374 |  |  | 0.700 |  | 42,262 |
November 29, 2022 |  | 2026 |  | 2023-2025 |  | $ | 11.41 |  |  | 166,284 |  |  | (80,337) |  |  | 85,947 |  |  | — |  | — |
Schedule of Share-based Compensation. Options | Stock option activity under the 2006 Plan is summarized below.
| Options |  | Weighted average exercise price per option |  | Weighted average remaining contractual term (years) |  | Aggregate intrinsic value (millions)
Outstanding at September 30, 2020 | 328,099 |  |  | $ | 6.11 |  |  | 2.3 |  | $ | 1.4 |
Granted | 431,520 |  |  | 11.86 |  |  |  |  |
Exercised | (151,399) |  |  | 4.09 |  |  |  |  | 1.7 |
Cancelled | (8,421) |  |  | — |  |  |  |  |
Outstanding at September 30, 2021 | 599,799 |  |  | 10.67 |  |  | 7.8 |  | $ | 2.7 |
Granted | 457,482 |  |  | 13.64 |  |  |  |  |
Exercised | (36,731) |  |  | 5.67 |  |  |  |  | 0.2 |
Cancelled | (7,257) |  |  | — |  |  |  |  |
Outstanding at September 30, 2022 | 1,013,293 |  |  | 12.19 |  |  | 7.7 |  | $ | 0.3 |
Granted | 573,279 |  |  | 11.41 |  |  |  |  |
Exercised | (131,989) |  |  | 9.59 |  |  |  |  | 0.4 |
Cancelled | (327,115) |  |  | — |  |  |  |  |
Outstanding at September 30, 2023 | 1,127,468 |  |  | $ | 12.10 |  |  | 7.8 |  | $ | 1.0 |
Exercisable at September 30, 2023 | 412,095 |  |  | $ | 11.97 |  |  | 6.5 |  | $ | 0.4 |
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block] |  | The ranges of exercise prices for stock options outstanding at September 30, 2023 are summarized below.
Exercise price |  | Options |  | Weighted average exercise price |  | Weighted average remaining contractual term (years) |  | Exercisable options |  | Weighted average exercise price
| $ | 5.00 |  | - | $ | 9.99 |  |  |  | 61,341 |  |  | $ | 9.31 |  |  | 0.9 |  | 61,341 |  |  | $ | 9.31 |
| $ | 10.00 |  | - | $ | 14.99 |  |  |  | 1,066,127 |  |  | $ | 12.26 |  |  | 8.2 |  | 348,050 |  |  | $ | 12.43 |
|  |  |  |  |  | 1,127,468 |  |  | $ | 12.10 |  |  | 7.8 |  | 409,391 |  |  | $ | 11.97 |
Schedule of Share-based Compensation, Phantom Award, Activity | Phantom Plan activity is summarized below.
| Phantom Plan units |  | Weighted average grant date fair value per unit |  | Weighted average remaining contractual term (years) |  | Aggregate intrinsic value (millions)
Outstanding at September 30, 2020 | 314,475 |  |  | $ | 11.16 |  |  | 0.9 |  |
Granted | 185,808 |  |  | 11.91 |  |  |  |  |
Vested | (131,182) |  |  |  |  |  |  | $ | 1.6 |
Cancelled | (24,257) |  |  | 11.30 |  |  |  |  |
Outstanding at September 30, 2021 | 344,844 |  |  | 11.51 |  |  | 0.9 |  |
Granted | 203,834 |  |  | 13.60 |  |  |  |  |
Vested | (162,969) |  |  |  |  |  |  | $ | 1.6 |
Cancelled | (46,578) |  |  | 12.39 |  |  |  |  |
Outstanding at September 30, 2022 | 339,131 |  |  | 12.74 |  |  | 1.1 |  |
Granted | 294,063 |  |  | 11.53 |  |  |  |  |
Vested | (156,012) |  |  |  |  |  |  | $ | 1.9 |
Cancelled | (120,515) |  |  | 12.22 |  |  |  |  |
Outstanding at September 30, 2023 | 356,667 |  |  | $ | 12.09 |  |  | 1.0 |  |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | The assumptions used to determine the grant date fair value are indicated below for grants issued during our 2023 fiscal year.
| November 29, 2022
Variables used in determining grant date fair value: |
Dividend yield | 1.80%
Risk-free rate | 3.89%
Expected term (in years) | 6.00

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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