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Selected Quarterly Financial Data (unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Selected Quarterly Statements of Income Data | The following tables set forth selected quarterly statements of income data for the periods indicated (dollars in thousands, except share and per share amounts):
|  | Quarter Ended |
|  | December 31, 2015 |  |  | September 30, 2015 |  |  | June 30, 2015 |  |  | March 31, 2015 |
Revenues |  | $ | 65,118 |  |  | $ | 55,340 |  |  | $ | 48,973 |  |  | $ | 55,222 |
Operating income |  |  | 6,234 |  |  |  | 6,855 |  |  |  | 10,808 |  |  |  | 10,538 |
Net income |  |  | 5,157 |  |  |  | 3,847 |  |  |  | 5,946 |  |  |  | 5,995 |
Net income per share, basic |  | $ | 0.09 |  |  | $ | 0.07 |  |  | $ | 0.10 |  |  | $ | 0.11 |
Net income per share, diluted |  | $ | 0.09 |  |  | $ | 0.07 |  |  | $ | 0.10 |  |  | $ | 0.11 |
Weighted average shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 57,109,987 |  |  |  | 57,050,684 |  |  |  | 57,038,021 |  |  |  | 54,749,951 |
Diluted |  |  | 58,365,587 |  |  |  | 58,367,830 |  |  |  | 58,369,083 |  |  |  | 56,562,661 |
The following tables set forth selected quarterly statements of income data for the periods indicated (dollars in thousands, except share and per share amounts):
|  | Quarter Ended |
|  | December 31, 2014 |  |  | September 30, 2014 |  |  | June 30, 2014 |  |  | March 31, 2014 |
Revenues |  | $ | 44,040 |  |  | $ | 36,598 |  |  | $ | 33,306 |  |  | $ | 36,985 |
Operating income |  |  | 4,787 |  |  |  | 4,678 |  |  |  | 3,094 |  |  |  | 3,141 |
Net income (loss) |  |  | 2,506 |  |  |  | 2,690 |  |  |  | (593 | ) |  |  | 1,060 |
Net income (loss) per share, basic |  | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | (0.01 | ) |  | $ | 0.02 |
Net income (loss) per share, diluted |  | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | (0.01 | ) |  | $ | 0.02 |
Weighted average shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 52,018,730 |  |  |  | 51,056,462 |  |  |  | 50,284,362 |  |  |  | 45,721,584 |
Diluted |  |  | 53,855,629 |  |  |  | 52,978,051 |  |  |  | 50,284,362 |  |  |  | 48,371,169 |

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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=51825399&loc=d3e1280-108306 + Details
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