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Net Income Per Share (Tables) | 3 Months Ended
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Dec. 31, 2021
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 December 31,
|  | 2021 |  | 2020
Numerator |  |  |  |
Net income |  | $ | 93,559 |  |  | $ | 87,678 |
Denominator |  |  |  |
Weighted average shares outstanding — basic |  | 60,810 |  |  | 61,440 |
Dilutive effect of common shares from stock options and restricted stock units |  | 1,072 |  |  | 842 |
Weighted average shares outstanding — diluted |  | 61,882 |  |  | 62,282 |
Basic net income per share |  | $ | 1.54 |  |  | $ | 1.43 |
Diluted net income per share |  | $ | 1.51 |  |  | $ | 1.41 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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