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v3.10.0.1

Selected Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 791,623 | $ 612,196 | $ 616,793 | $ 606,118 | $ 595,088 | $ 591,542 | $ 604,124 | $ 610,065 | $ 2,626,730 | $ 2,400,819 | $ 2,199,259
Operating Income (Loss) | 94,684 | 69,568 | 96,258 | 94,774 | 80,477 | 78,940 | 89,554 | 94,830 | 355,284 | 343,801 | 260,408
Income from continuing operations, net of tax | 22,867 | 11,837 | 38,598 | 41,399 | 82,073 | 23,157 | 27,692 | 35,076 | 114,701 | 167,998 | 207,701
Income from discontinued operations, net of tax | 0 | 0 | 347 | 0 | 0 | 0 | 21,017 | 375 | 347 | 21,392 | 212,530
Net Income (Loss) Attributable to Parent | $ 22,867 | $ 11,837 | $ 38,945 | $ 41,399 | $ 82,073 | $ 23,157 | $ 48,709 | $ 35,451 | $ 115,048 | $ 189,390 | $ 420,231
Continuing operations | $ 0.21 | $ 0.10 | $ 0.34 | $ 0.36 | $ 0.72 | $ 0.20 | $ 0.24 | $ 0.31 | $ 1.01 | $ 1.46 | $ 1.81
Discontinued operations | 0.00 | 0 | 0 | 0.00 | 0.00 | 0 | 0.18 | 0.00 | 0.00 | 0.19 | 1.86
Basic net income per common share | 0.21 | 0.10 | 0.34 | 0.36 | 0.72 | 0.20 | 0.42 | 0.31 | 1.01 | 1.65 | 3.67
Continuing operations | 0.20 | 0.10 | 0.34 | 0.36 | 0.71 | 0.20 | 0.24 | 0.31 | 1.00 | 1.45 | 1.80
Discontinued operations | 0.00 | 0 | 0 | 0.00 | 0.00 | 0 | 0.18 | 0.00 | 0.00 | 0.19 | 1.85
Diluted net income per common share | $ 0.20 | $ 0.10 | $ 0.34 | $ 0.36 | $ 0.71 | $ 0.20 | $ 0.42 | $ 0.31 | $ 1.00 | $ 1.64 | $ 3.65

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