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Earnings per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share Basic and Diluted |
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
Numerator — basic and diluted |  |  |  |  |
Net income | $ | 210,682 |  |  | $ | 216,726 |  |  | $ | 150,611 |
Denominator |  |  |  |  |
Weighted average number of common shares outstanding — basic | 35,602 |  |  | 36,774 |  |  | 37,098 |
Effect of dilutive restricted shares | 763 |  |  | 820 |  |  | 729 |
Effect of dilutive stock options | 419 |  |  | 455 |  |  | 491 |
Effect of dilutive convertible notes | 365 |  |  | 62 |  |  | — |
Weighted average number of common shares outstanding — diluted | 37,149 |  |  | 38,111 |  |  | 38,318 |
Earnings per common share — basic | $ | 5.92 |  |  | $ | 5.89 |  |  | $ | 4.06 |
Earnings per common share — diluted | $ | 5.67 |  |  | $ | 5.69 |  |  | $ | 3.93 |
Antidilutive stock options and restricted shares | 66 |  |  | 19 |  |  | 175 |

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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=6371337&loc=d3e3550-109257 + Details
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