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The Incentive Stock Plans - Summary of Activity from Incentive Stock Plans (Detail) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Options granted, Options Outstanding | 5,000 | 0
Stock Options [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Shares Available for Grant, Beginning Balance | 1,536,094 |
Shares authorized, Shares Available for Grant | 1,300,000 |
Options granted, Shares Available for Grant | (5,000) |
Options cancelled/forfeited/expired, Shares Available for Grant | 10,000 |
Restricted stock awards granted, Shares Available for Grant | (825,573) |
Restricted stock awards forfeited, Shares Available for Grant | 20,445 |
Additional shares of stock issued, Shares Available for Grant | (51,378) |
Shares Available for Grant, Ending Balance | 1,984,588 | 1,536,094
Options Outstanding, Beginning Balance | 54,750 | 62,750
Options granted, Options Outstanding | 5,000 |
Options cancelled/forfeited/expired, Options Outstanding | (10,000) |
Options exercised, Options Outstanding | (3,000) |
Options Outstanding, Ending Balance | 54,750 | 62,750
Exercisable as of September 30, 2023, Options Outstanding | 51,416 |
Aggregate Intrinsic Value | $ 746 | $ 893
Exercisable as of September 30 2023, Aggregate Intrinsic Value | $ 705 |
Weighted Average Exercise Price, Beginning Balance | $ 20.96 | $ 17.62
Options granted, Weighted Average Exercise Price | 31.2 |
Options cancelled/forfeited/expired, Weighted Average Exercise Price | 7.48 |
Options exercised, Weighted Average Exercise Price | 13.06 |
Weighted Average Exercise Price, Ending Balance | 20.96 | $ 17.62
Exercisable as of September 30 2023, Weighted Average Exercise Price | $ 20.3 |
Weighted Average Remaining Contractual Life | 2 years 6 months | 2 years 3 months 18 days
Options granted, Weighted Average Remaining Contractual Life | 2 years |
Exercisable as of September 30, 2023, Weighted Average Remaining Contractual Life | 2 years 1 month 6 days |

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(03) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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