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Quarterly Financial Data (Tables) | 12 Months Ended
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Dec. 31, 2019
Quarterly Financial Data [Abstract] |
Summary Of Quarterly Financial Data |
|  |  |  |  | 2019
|  |  |  |  | March 31 |  | June 30 |  | September 30 |  | December 31
Revenue |  |  |  |  | $ | 1,308,217 |  | $ | 1,434,231 |  | $ | 1,403,697 |  | $ | 1,440,224
Income from operations |  |  |  |  | $ | 110,161 |  | $ | 120,020 |  | $ | 115,621 |  | $ | 98,156
Net income |  |  |  |  | $ | 88,132 |  | $ | 91,028 |  | $ | 98,582 |  | $ | 72,416
Basic earnings per share |  |  |  |  | $ | 3.18 |  | $ | 3.28 |  | $ | 3.55 |  | $ | 2.61
Diluted earnings per share |  |  |  |  | $ | 3.13 |  | $ | 3.22 |  | $ | 3.47 |  | $ | 2.55
|  |  |  |  | 2018
|  |  |  |  | March 31 |  | June 30 |  | September 30 |  | December 31
Revenue |  |  |  |  | $ | 1,148,397 |  | $ | 1,266,520 |  | $ | 1,225,007 |  | $ | 1,225,061
Income from operations |  |  |  |  | $ | 92,808 |  | $ | 67,957 |  | $ | 57,991 |  | $ | 39,612
Net income |  |  |  |  | $ | 59,446 |  | $ | 46,884 |  | $ | 38,204 |  | $ | 32,019
Basic earnings per share |  |  |  |  | $ | 2.13 |  | $ | 1.69 |  | $ | 1.37 |  | $ | 1.15
Diluted earnings per share |  |  |  |  | $ | 2.13 |  | $ | 1.68 |  | $ | 1.36 |  | $ | 1.15

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118952077&loc=d3e1280-108306 + Details
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