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Net Income Per Share (Tables) | 9 Months Ended
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Jun. 30, 2026
Net Income Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share data):
|  | Three Months Ended June 30, |  | Nine Months Ended June 30,
|  | 2026 |  | 2025 |  | 2026 |  | 2025
Numerator |  |  |  |  |  |  |  |
Net income |  | $ | 208,208 |  |  | $ | 189,912 |  |  | $ | 536,017 |  |  | $ | 501,887 |
Denominator |  |  |  |  |  |  |  |
Weighted average shares outstanding — basic |  | 56,726 |  |  | 57,772 |  |  | 57,031 |  |  | 57,989 |
Dilutive effect of common shares from stock options and restricted stock units |  | 824 |  |  | 720 |  |  | 643 |  |  | 784 |
Weighted average shares outstanding — diluted |  | 57,550 |  |  | 58,492 |  |  | 57,674 |  |  | 58,773 |
Basic net income per share |  | $ | 3.67 |  |  | $ | 3.29 |  |  | $ | 9.40 |  |  | $ | 8.65 |
Diluted net income per share |  | $ | 3.62 |  |  | $ | 3.25 |  |  | $ | 9.29 |  |  | $ | 8.54 |

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- Definition Net Income Per Share [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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