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Net Income Per Share (Tables)

12 Months Ended

Sep. 30, 2025

Net Income Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share data):

						Years Ended September 30,
						2025						2024						2023
Numerator
Net income						$	692,380					$	566,778					$	394,948
Denominator
Weighted average shares outstanding — basic						57,904						58,720						59,909
Dilutive effect of common shares from stock options and restricted stock units						780						639						361
Weighted average shares outstanding — diluted						58,684						59,359						60,270
Basic net income per share						$	11.96					$	9.65					$	6.59
Diluted net income per share						$	11.80					$	9.55					$	6.55

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- Definition

Net Income Per Share [Abstract]

+ References

No definition available.

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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

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