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Quarterly Operating Results (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Operating Results (unaudited) |
2014 |  | 1st |  |  | 2nd |  |  | 3rd |  |  | 4th |  |  | Year |
|  |  |  |  | (In thousands, except days and per share amounts) |  |  |  |
Number of days in quarter |  |  | 89 |  |  |  | 91 |  |  |  | 91 |  |  |  | 94 |  |  |  | 365 |
Revenues |  | $ | 487,690 |  |  | $ | 600,891 |  |  | $ | 610,774 |  |  | $ | 608,910 |  |  | $ | 2,308,265 |
Gross profit |  |  | 175,717 |  |  |  | 204,385 |  |  |  | 221,732 |  |  |  | 217,615 |  |  |  | 819,449 |
Operating income |  |  | 49,511 |  |  |  | 12,326 |  |  |  | 58,011 |  |  |  | 43,271 |  |  |  | 163,119 |
Income from continuing operations |  |  | 25,156 |  |  |  | 15 |  |  |  | 33,847 |  |  |  | 15,414 |  |  |  | 74,432 |
Income from discontinued operations, net of tax |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 579 |  |  |  | 579 |
Loss from disposal of discontinued operations, net of tax |  |  | (562 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (562 | )
Net income |  |  | 24,594 |  |  |  | 15 |  |  |  | 33,847 |  |  |  | 15,993 |  |  |  | 74,449 |
Basic income (loss) per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations |  | $ | 0.58 |  |  | $ | — |  |  | $ | 0.78 |  |  | $ | 0.36 |  |  | $ | 1.72 |
Discontinued operations |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.01 |  |  |  | 0.01 |
Disposal of discontinued operations |  |  | (0.01 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (0.01 | )
Net income |  | $ | 0.57 |  |  | $ | — |  |  | $ | 0.78 |  |  | $ | 0.37 |  |  | $ | 1.72 |
Diluted income (loss) per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations |  | $ | 0.57 |  |  | $ | — |  |  | $ | 0.77 |  |  | $ | 0.35 |  |  | $ | 1.69 |
Discontinued operations |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.01 |  |  |  | 0.01 |
Disposal of discontinued operations |  |  | (0.01 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (0.01 | )
Net income |  | $ | 0.56 |  |  | $ | — |  |  | $ | 0.77 |  |  | $ | 0.36 |  |  | $ | 1.69 |
2013 |  | 1st |  |  | 2nd |  |  | 3rd |  |  | 4th |  |  | Year |
|  |  |  |  | (In thousands, except days and per share amounts) |  |  |  |
Number of days in quarter |  |  | 90 |  |  |  | 91 |  |  |  | 91 |  |  |  | 93 |  |  |  | 365 |
Revenues |  | $ | 507,473 |  |  | $ | 529,491 |  |  | $ | 522,478 |  |  | $ | 509,751 |  |  | $ | 2,069,193 |
Gross profit |  |  | 167,353 |  |  |  | 179,196 |  |  |  | 182,841 |  |  |  | 175,039 |  |  |  | 704,429 |
Operating income |  |  | 44,240 |  |  |  | 53,913 |  |  |  | 53,935 |  |  |  | 49,174 |  |  |  | 201,262 |
Income from continuing operations |  |  | 22,245 |  |  |  | 29,492 |  |  |  | 29,068 |  |  |  | 23,929 |  |  |  | 104,734 |
Loss from discontinued operations, net of tax |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (1,421 | ) |  |  | (1,421 | )
Net income |  |  | 22,245 |  |  |  | 29,492 |  |  |  | 29,068 |  |  |  | 22,508 |  |  |  | 103,313 |
Basic income (loss) per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations |  | $ | 0.50 |  |  | $ | 0.67 |  |  | $ | 0.67 |  |  | $ | 0.55 |  |  | $ | 2.39 |
Discontinued operations |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (0.03 | ) |  |  | (0.03 | )
Net income |  | $ | 0.50 |  |  | $ | 0.67 |  |  | $ | 0.67 |  |  | $ | 0.52 |  |  | $ | 2.36 |
Diluted income (loss) per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations |  | $ | 0.49 |  |  | $ | 0.66 |  |  | $ | 0.65 |  |  | $ | 0.54 |  |  | $ | 2.34 |
Discontinued operations |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (0.03 | ) |  |  | (0.03 | )
Net income |  | $ | 0.49 |  |  | $ | 0.66 |  |  | $ | 0.65 |  |  | $ | 0.51 |  |  | $ | 2.31 |

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=35737889&loc=d3e1280-108306 + Details
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