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Selected Quarterly Financial Information (Unaudited) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Financial Information (Unaudited) | SELECTED QUARTERLY FINANCIAL INFORMATION (UNAUDITED) The following table presents selected quarterly financial information:
| Year Ended December 31, 2017
(In thousands, except per share data) | First |  | Second |  | Third |  | Fourth |  | Year
Summary Operating Results: |  |  |  |  |  |  |  |  |
Net revenues | $ | 605,342 |  |  | $ | 599,868 |  |  | $ | 587,665 |  |  | $ | 590,832 |  |  | $ | 2,383,707 |
Operating income | 94,868 |  |  | 89,361 |  |  | 78,665 |  |  | 80,601 |  |  | 343,495 |
Income from continuing operations, net of tax | $ | 35,114 |  |  | $ | 27,561 |  |  | $ | 22,976 |  |  | $ | 82,150 |  |  | $ | 167,801 |
Income from discontinued operations, net of tax | 375 |  |  | 21,017 |  |  | — |  |  | — |  |  | 21,392 |
Net income | $ | 35,489 |  |  | $ | 48,578 |  |  | $ | 22,976 |  |  | $ | 82,150 |  |  | $ | 189,193 |
Basic net income per common share: |  |  |  |  |  |  |  |  |
Continuing operations | $ | 0.31 |  |  | $ | 0.24 |  |  | $ | 0.20 |  |  | $ | 0.72 |  |  | $ | 1.46 |
Discontinued operations | — |  |  | 0.18 |  |  | — |  |  | — |  |  | 0.19 |
Basic net income per common share | $ | 0.31 |  |  | $ | 0.42 |  |  | $ | 0.20 |  |  | $ | 0.72 |  |  | $ | 1.65 |
Diluted net income per common share: |  |  |  |  |  |  |  |  |
Continuing operations | $ | 0.31 |  |  | $ | 0.24 |  |  | $ | 0.20 |  |  | $ | 0.71 |  |  | $ | 1.45 |
Discontinued operations | — |  |  | 0.18 |  |  | — |  |  | — |  |  | 0.19 |
Diluted net income per common share | $ | 0.31 |  |  | $ | 0.42 |  |  | $ | 0.20 |  |  | $ | 0.71 |  |  | $ | 1.64 |
| Year Ended December 31, 2016
(In thousands, except per share data) | First |  | Second |  | Third |  | Fourth |  | Year
Summary Operating Results: |  |  |  |  |  |  |  |  |
Net revenues | $ | 552,378 |  |  | $ | 544,874 |  |  | $ | 531,901 |  |  | $ | 554,823 |  |  | $ | 2,183,976 |
Operating income | 82,250 |  |  | 80,490 |  |  | 67,916 |  |  | 29,971 |  |  | 260,627 |
Income from continuing operations, net of tax | $ | 21,560 |  |  | $ | 11,307 |  |  | $ | 161,864 |  |  | $ | 10,742 |  |  | $ | 205,473 |
Income from discontinued operations, net of tax | 11,630 |  |  | 18,715 |  |  | 180,707 |  |  | 1,478 |  |  | 212,530 |
Net income | $ | 33,190 |  |  | $ | 30,022 |  |  | $ | 342,571 |  |  | $ | 12,220 |  |  | $ | 418,003 |
Basic net income per common share: |  |  |  |  |  |  |  |  |
Continuing operations | $ | 0.19 |  |  | $ | 0.10 |  |  | $ | 1.41 |  |  | $ | 0.10 |  |  | $ | 1.79 |
Discontinued operations | 0.10 |  |  | 0.16 |  |  | 1.58 |  |  | 0.01 |  |  | 1.86 |
Basic net income per common share | $ | 0.29 |  |  | $ | 0.26 |  |  | $ | 2.99 |  |  | $ | 0.11 |  |  | $ | 3.65 |
Diluted net income per common share: |  |  |  |  |  |  |  |  |
Continuing operations | $ | 0.19 |  |  | $ | 0.10 |  |  | $ | 1.40 |  |  | $ | 0.10 |  |  | $ | 1.78 |
Discontinued operations | 0.10 |  |  | 0.16 |  |  | 1.57 |  |  | 0.01 |  |  | 1.85 |
Diluted net income per common share | $ | 0.29 |  |  | $ | 0.26 |  |  | $ | 2.97 |  |  | $ | 0.11 |  |  | $ | 3.63 |

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
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