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Net Income Per Share (Tables) | 6 Months Ended
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Mar. 31, 2022
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 March 31, |  | Six months ended March 31,
|  | 2022 |  | 2021 |  | 2022 |  | 2021
Numerator |  |  |  |  |  |  |  |
Net income |  | $ | 56,236 |  |  | $ | 43,241 |  |  | $ | 149,795 |  |  | $ | 130,919 |
Denominator |  |  |  |  |  |  |  |
Weighted average shares outstanding — basic |  | 60,573 |  |  | 60,667 |  |  | 60,693 |  |  | 61,058 |
Dilutive effect of common shares from stock options and restricted stock units |  | 832 |  |  | 1,491 |  |  | 968 |  |  | 1,234 |
Weighted average shares outstanding — diluted |  | 61,405 |  |  | 62,158 |  |  | 61,661 |  |  | 62,292 |
Basic net income per share |  | $ | 0.93 |  |  | $ | 0.71 |  |  | $ | 2.47 |  |  | $ | 2.14 |
Diluted net income per share |  | $ | 0.92 |  |  | $ | 0.70 |  |  | $ | 2.43 |  |  | $ | 2.10 |

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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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