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Selected Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2015
Selected Quarterly Financial Data (Unaudited) | (18) Selected Quarterly Financial Data (Unaudited) The following tables contain unaudited Statement of Operations information for each quarter of 2015 and 2014. The Company believes that the following information reflects all normal recurring adjustments. During the fourth quarter of 2014, the Company recognized a reduction in its accrued bonus expense as a result of a change in estimate, which resulted in a $7.4 million increase in net income. The operating results for any quarter are not necessarily indicative of results for any future period.
|  | Quarter Ended |  |  |  |
|  | March 31 |  |  | June 30 |  |  | September 30 |  |  | December 31 |  |  | Year |
|  | (in thousands, except per share data) |
2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 123,871 |  |  | $ | 132,940 |  |  | $ | 129,536 |  |  | $ | 143,522 |  |  | $ | 529,869 |
Gross profit |  | $ | 96,773 |  |  | $ | 107,028 |  |  | $ | 104,852 |  |  | $ | 120,108 |  |  | $ | 428,761 |
Net income |  | $ | 20,460 |  |  | $ | 22,467 |  |  | $ | 23,893 |  |  | $ | 39,111 |  |  | $ | 105,931 |
Earnings per share:(1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.81 |  |  | $ | 1.98 |  |  | $ | 2.10 |  |  | $ | 3.44 |  |  | $ | 9.33 |
Diluted |  | $ | 1.79 |  |  | $ | 1.95 |  |  | $ | 2.06 |  |  | $ | 3.38 |  |  | $ | 9.18 |
|  | Quarter Ended |  |  |  |
|  | March 31 |  |  | June 30 |  |  | September 30 |  |  | December 31 |  |  | Year |
|  | (in thousands, except per share data) |
2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 137,904 |  |  | $ | 141,853 |  |  | $ | 151,202 |  |  | $ | 148,871 |  |  | $ | 579,830 |
Gross profit |  | $ | 104,895 |  |  | $ | 106,240 |  |  | $ | 116,249 |  |  | $ | 117,236 |  |  | $ | 444,620 |
Net (loss) income |  | $ | (6,482 | ) |  | $ | (10,337 | ) |  | $ | (845 | ) |  | $ | 22,699 |  |  | $ | 5,035 |
(Loss) earnings per share:(1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.57 | ) |  | $ | (0.91 | ) |  | $ | (0.07 | ) |  | $ | 2.01 |  |  | $ | 0.45 |
Diluted |  | $ | (0.57 | ) |  | $ | (0.91 | ) |  | $ | (0.07 | ) |  | $ | 1.99 |  |  | $ | 0.44 |
(1) | The sum of the basic and diluted earnings (loss) per share for the four quarters may differ from annual earnings (loss) per share as the weighted-average shares outstanding are computed independently for each of the quarters presented.

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- Definition The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished. + References Reference 1: 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=51655806&loc=d3e765-108305 Reference 2: 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=51825399&loc=d3e1280-108306 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=51655806&loc=d3e725-108305 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section G -Subsection 1 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 302 -Paragraph a + Details
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