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Net Income Per Share (Tables) | 9 Months Ended
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Sep. 30, 2022
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | The following shows a reconciliation of basic net earnings per share ("EPS") to diluted EPS:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(in thousands, except per share amounts) | 2022 |  | 2021 |  | 2022 |  | 2021
Net income available to common stockholders | $ | 88,243 |  |  | $ | 73,778 |  |  | $ | 276,389 |  |  | $ | 196,650 |
Basic weighted-average shares outstanding | 42,813 |  |  | 43,276 |  |  | 43,044 |  |  | 43,287 |
Dilutive effect of potential common stock equivalents — restricted stock units | 103 |  |  | 209 |  |  | 129 |  |  | 213 |
Diluted weighted-average shares outstanding | 42,916 |  |  | 43,485 |  |  | 43,173 |  |  | 43,500 |
Net income per common share: |  |  |  |  |  |  |
Basic | $ | 2.06 |  |  | $ | 1.70 |  |  | $ | 6.42 |  |  | $ | 4.54 |
Diluted | $ | 2.06 |  |  | $ | 1.70 |  |  | $ | 6.40 |  |  | $ | 4.52 |

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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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