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Stock-Based Compensation (Tables) | 12 Months Ended
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Sep. 30, 2023
Share-Based Payment Arrangement [Abstract] |
Schedule of allocation of share-based compensation costs by plan | Following is a summary of stock-based compensation expense related to stock options and restricted stock awards for the fiscal years ended 2023, 2022 and 2021, respectively.
| Fiscal Year Ended September 30,
in thousands | 2023 |  | 2022 |  | 2021
Stock options expense | $ | — |  |  | $ | 1 |  |  | $ | 25 |
Restricted stock awards expense | 7,275 |  |  | 8,477 |  |  | 12,142 |
Stock-based compensation expense | $ | 7,275 |  |  | $ | 8,478 |  |  | $ | 12,167 |
Schedule of assumptions for stock option activity | For the Company and each member of the peer group, the following inputs were used, as applicable, in the Monte Carlo valuation model to determine the fair value as of the grant date for performance-based restricted stock granted in each of the fiscal years ended.
| Fiscal Year Ended September 30,
| 2023 |  | 2022 |  | 2021
Expected volatility range | 41.5% - 86.9% |  | 41.0% - 89.0% |  | 26.1% - 67.0%
Risk-free interest rate | 4.26 | % |  | 0.81 | % |  | 0.23 | %
Dividend yield | — |  |  | — |  |  | — |
Grant-date stock price range | $10.31 - $93.50 |  | $21.40 - $142.99 |  | $14.07 - $4,318.03
Schedule of stock options activity | Following is a summary of stock option activity for the periods presented:
| Fiscal Year Ended September 30,
| 2023 |  | 2022 |  | 2021
| Shares |  | Weighted- Average Exercise Price |  | Shares |  | Weighted- Average Exercise Price |  | Shares |  | Weighted- Average Exercise Price
Outstanding at beginning of period | 27,507 |  |  | $ | 14.31 |  |  | 114,259 |  |  | $ | 17.89 |  |  | 392,465 |  |  | $ | 15.47 |
Granted | 100 |  |  | 27.98 |  |  | 236 |  |  | 16.58 |  |  | — |  |  | — |
Exercised | (13,796) |  |  | 19.00 |  |  | (988) |  |  | 11.32 |  |  | (278,206) |  |  | 14.48 |
Expired | — |  |  | — |  |  | (86,000) |  |  | 19.11 |  |  | — |  |  | — |
Forfeited | (236) |  |  | 16.58 |  |  | — |  |  | — |  |  | — |  |  | — |
Outstanding at end of period | 13,575 |  |  | $ | 9.61 |  |  | 27,507 |  |  | $ | 14.31 |  |  | 114,259 |  |  | $ | 17.89 |
Exercisable at end of period | 13,475 |  |  | $ | 9.48 |  |  | 27,271 |  |  | $ | 14.29 |  |  | 113,309 |  |  | $ | 17.95 |
Schedule of nonvested stock awards and performance shares | Activity relating to all restricted stock awards for the periods presented is as follows:
| Fiscal Year Ended September 30, 2023
| Performance-Based(a) |  | 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 | 436,146 |  |  | $ | 17.76 |  |  | 412,042 |  |  | $ | 18.52 |  |  | 848,188 |  |  | $ | 18.13 |
Granted | 249,534 |  |  | 14.17 |  |  | 425,398 |  |  | 12.05 |  |  | 674,932 |  |  | 12.83 |
Vested | (334,736) |  |  | 16.80 |  |  | (234,218) |  |  | 18.02 |  |  | (568,954) |  |  | 17.30 |
Forfeited | (2,721) |  |  | 15.20 |  |  | (9,388) |  |  | 14.38 |  |  | (12,109) |  |  | 14.56 |
End of period | 348,223 |  |  | $ | 16.20 |  |  | 593,834 |  |  | $ | 14.15 |  |  | 942,057 |  |  | $ | 14.91 |
(a) Grant and vesting activity during the fiscal year ended September 30, 2023 include 92,104 shares that were issued above target based on performance level achieved under performance-based restricted stock vesting in the current period.
| Fiscal Year Ended September 30, 2022
| Performance-Based(a) |  | 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 | 738,155 |  |  | $ | 13.45 |  |  | 486,574 |  |  | $ | 13.79 |  |  | 1,224,729 |  |  | $ | 13.59 |
Granted | 269,617 |  |  | 18.98 |  |  | 246,844 |  |  | 21.40 |  |  | 516,461 |  |  | 20.14 |
Vested | (552,417) |  |  | 10.50 |  |  | (286,182) |  |  | 13.21 |  |  | (838,599) |  |  | 11.42 |
Forfeited | (19,209) |  |  | 17.27 |  |  | (35,194) |  |  | 16.49 |  |  | (54,403) |  |  | 16.77 |
End of period | 436,146 |  |  | $ | 17.76 |  |  | 412,042 |  |  | $ | 18.52 |  |  | 848,188 |  |  | $ | 18.13 |
(a) Grant and vesting activity during the fiscal year ended September 30, 2022 include 177,759 shares that were issued above target based on performance level achieved under performance-based restricted stock vesting in the current period.
| Fiscal Year Ended September 30, 2021
| Performance-Based(a) |  | 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 | 796,024 |  |  | $ | 14.71 |  |  | 610,130 |  |  | $ | 13.85 |  |  | 1,406,154 |  |  | $ | 14.34 |
Granted | 164,296 |  |  | 17.90 |  |  | 251,788 |  |  | 14.21 |  |  | 416,084 |  |  | 15.67 |
Vested | (222,165) |  |  | 22.40 |  |  | (346,856) |  |  | 14.36 |  |  | (569,021) |  |  | 17.50 |
Forfeited | — |  |  | — |  |  | (28,488) |  |  | 11.77 |  |  | (28,488) |  |  | 11.77 |
End of period | 738,155 |  |  | $ | 13.45 |  |  | 486,574 |  |  | $ | 13.79 |  |  | 1,224,729 |  |  | $ | 13.59 |
(a) Grant and vesting activity during the fiscal year ended September 30, 2021 include 60,930 shares that were issued above target based on performance level achieved under performance-based restricted stock vesting in the current period.

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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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