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Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Data (Unaudited) |
| Quarter Ended
(in thousands, except per share amounts) | March 31 |  | June 30 |  | Sept. 30 |  | Dec. 31
2019 |  |  |  |  |  |  |
Revenues | $ | 1,153,010 |  |  | $ | 1,043,316 |  |  | $ | 1,043,388 |  |  | $ | 1,075,090 |
Gross profit | 226,717 |  |  | 173,735 |  |  | 170,546 |  |  | 161,936 |
Operating income | 85,461 |  |  | 38,720 |  |  | 34,733 |  |  | 27,719 |
Net income | 76,289 |  |  | 28,556 |  |  | 25,859 |  |  | 20,395 |
Basic net income per share | 1.86 |  |  | 0.69 |  |  | 0.64 |  |  | 0.51 |
Diluted net income per share | 1.85 |  |  | 0.69 |  |  | 0.63 |  |  | 0.51 |
2018 |  |  |  |  |  |  |
Revenues | $ | 1,014,372 |  |  | $ | 922,295 |  |  | $ | 925,126 |  |  | $ | 966,756 |
Gross profit | 199,720 |  |  | 154,544 |  |  | 166,054 |  |  | 161,591 |
Operating income | 64,703 |  |  | 33,581 |  |  | 48,133 |  |  | 32,619 |
Net income | 49,991 |  |  | 24,560 |  |  | 36,207 |  |  | 24,655 |
Basic net income per share | 1.20 |  |  | 0.59 |  |  | 0.86 |  |  | 0.59 |
Diluted net income per share | 1.18 |  |  | 0.58 |  |  | 0.86 |  |  | 0.59 |

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- References No definition available. + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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