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Selected Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Financial Data (Unaudited) | NOTE 17. Selected Quarterly Financial Data (Unaudited) The following table sets forth the selected quarterly financial data for each of the quarters in 2016 (in thousands, except per share amounts):
| Quarter Ended |
| March 31, |  |  | June 30, |  |  | September 30, |  |  | December 31, |
| 2016 |  |  | 2016 |  |  | 2016 |  |  | 2016 |
Year Ended December 31, 2016: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue | $ | 805,859 |  |  | $ | 855,557 |  |  | $ | 932,814 |  |  | $ | 978,560 |
Gross margin |  | 108,387 |  |  |  | 114,490 |  |  |  | 111,454 |  |  |  | 120,454 |
Operating income |  | 28,843 |  |  |  | 34,297 |  |  |  | 29,855 |  |  |  | 30,839 |
Net income |  | 17,965 |  |  |  | 20,671 |  |  |  | 17,924 |  |  |  | 18,244 |
Basic earnings per share | $ | 0.51 |  |  | $ | 0.61 |  |  | $ | 0.54 |  |  | $ | 0.55 |
Diluted earnings per share | $ | 0.51 |  |  | $ | 0.61 |  |  | $ | 0.54 |  |  | $ | 0.55 |
The following table sets forth the selected quarterly financial data for each of the quarters in 2015 (in thousands, except per share amounts):
| Quarter Ended |
| March 31, |  |  | June 30, |  |  | September 30, |  |  | December 31, |
| 2015 |  |  | 2015 |  |  | 2015 |  |  | 2015 |
Year Ended December 31, 2015: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue | $ | 835,941 |  |  | $ | 899,513 |  |  | $ | 899,869 |  |  | $ | 890,272 |
Gross margin |  | 89,128 |  |  |  | 101,729 |  |  |  | 105,064 |  |  |  | 116,774 |
Operating income |  | 18,795 |  |  |  | 29,476 |  |  |  | 33,418 |  |  |  | 35,341 |
Net income |  | 10,276 |  |  |  | 18,467 |  |  |  | 19,832 |  |  |  | 22,374 |
Basic earnings per share | $ | 0.28 |  |  | $ | 0.51 |  |  | $ | 0.55 |  |  | $ | 0.63 |
Diluted earnings per share | $ | 0.28 |  |  | $ | 0.51 |  |  | $ | 0.55 |  |  | $ | 0.63 |

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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 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1570-108306 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305 + Details
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