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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2025
Earnings Per Share [Abstract] |
Computation of earnings per share and reconciliation of basic and diluted weighted average common shares outstanding |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Net income |  | $ | 127,013 |  |  | $ | 125,701 |  |  | $ | 374,816 |  |  | $ | 397,025 |
Amounts allocated to participating securities |  |  | (626 | ) |  |  | (654 | ) |  |  | (1,847 | ) |  |  | (2,071 | )
Net income attributable to common stockholders |  | $ | 126,387 |  |  | $ | 125,047 |  |  | $ | 372,969 |  |  | $ | 394,954 |
Weighted average common shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 37,090 |  |  |  | 37,983 |  |  |  | 37,272 |  |  |  | 38,104 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Stock options and employee stock purchase plan |  |  | 133 |  |  |  | 204 |  |  |  | 148 |  |  |  | 226 |
Diluted |  |  | 37,223 |  |  |  | 38,187 |  |  |  | 37,420 |  |  |  | 38,330 |
Earnings per share attributable to common stockholders: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 3.41 |  |  | $ | 3.29 |  |  |  | 10.01 |  |  | $ | 10.37 |
Diluted |  |  | 3.40 |  |  | $ | 3.27 |  |  |  | 9.97 |  |  | $ | 10.30 |
Anti-dilutive stock options excluded from diluted earnings per share computations (¹) |  |  | 188 |  |  |  | 88 |  |  |  | 190 |  |  |  | 57 |

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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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