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v3.25.2

Employee Stock Purchase Plan - Additional Information (Detail) - USD ($) | 1 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Feb. 28, 2025 | Feb. 28, 2019 | Jun. 30, 2025 | Sep. 30, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Common stock, shares issued |  |  | 30,130,499 | 29,898,545
Stock Purchase Plan [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Additional common shares authorized | 500,000 | 500,000 |  |
Common stock available for issuance |  |  | 2,000,000 |
Stock Purchase Plan, requisite continuous service |  |  | 1 year |
Annual offerings description |  |  | implementation of annual offerings beginning on the first day of October in each of the years 2008 through 2027, with each offering terminating on September 30 of the following year. |
Closing price of common stock on the first and last day of the offering |  |  | 85.00% |
Percentage not exceeding to periodic payment of purchase price |  |  | 10.00% |
Maximum common stock value purchased by participant annually |  |  | $ 25,000 |
Common stock, shares issued |  |  | 1,428,555 |
1998 Employee Stock Purchase Plan [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Additional Common Shares Authorized |  |  | 52,837 |

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Description of terms of share-based payment arrangement. Includes, but is not limited to, type of award or grantee and reason for issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Line items represent financial concepts included in a table. 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- Definition Number of additional shares authorized for issuance under share-based payment arrangement. + References No definition available. + Details
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