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Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract] |
Unaudited Quarterly Financial Data | The following table represents unaudited quarterly financial data for the years ended December 31, 2015 and 2014.
|  | Three Months Ended |
|  | March 31 |  |  | June 30 |  |  | September 30 |  |  | December 31 |
|  | (in thousands, except per share amounts) |
2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Premiums earned |  | $ | 94,787 |  |  | $ | 95,569 |  |  | $ | 90,504 |  |  | $ | 95,034 |
Net investment income |  |  | 6,833 |  |  |  | 6,890 |  |  |  | 6,923 |  |  |  | 7,256 |
Net realized gains (losses) on investments |  |  | 59 |  |  |  | (2,617 | ) |  |  | 40 |  |  |  | 24 |
Total revenues |  |  | 101,788 |  |  |  | 99,936 |  |  |  | 97,470 |  |  |  | 101,760 |
Income before income taxes |  |  | 21,197 |  |  |  | 20,112 |  |  |  | 25,890 |  |  |  | 33,768 |
Net income |  |  | 15,130 |  |  |  | 14,319 |  |  |  | 17,940 |  |  |  | 23,073 |
Net income available to common shareholders |  |  | 15,130 |  |  |  | 14,319 |  |  |  | 17,940 |  |  |  | 23,073 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 0.80 |  |  |  | 0.76 |  |  |  | 0.95 |  |  |  | 1.21 |
Diluted |  |  | 0.79 |  |  |  | 0.75 |  |  |  | 0.94 |  |  |  | 1.21 |
Comprehensive income |  |  | 15,948 |  |  |  | 12,744 |  |  |  | 19,248 |  |  |  | 22,299 |
Extraordinary cash dividends declared per common share |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 3.00 |
Cash dividends declared per common share |  | $ | 0.15 |  |  | $ | 0.15 |  |  | $ | 0.15 |  |  | $ | 0.15 |
2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Premiums earned |  | $ | 89,233 |  |  | $ | 93,516 |  |  | $ | 95,928 |  |  | $ | 97,070 |
Net investment income |  |  | 6,708 |  |  |  | 6,845 |  |  |  | 6,495 |  |  |  | 7,166 |
Net realized gains (losses) on investments |  |  | 101 |  |  |  | 232 |  |  |  | (152 | ) |  |  | 516 |
Total revenues |  |  | 96,173 |  |  |  | 100,624 |  |  |  | 102,336 |  |  |  | 104,886 |
Income before income taxes |  |  | 13,404 |  |  |  | 17,061 |  |  |  | 19,348 |  |  |  | 23,936 |
Net income |  |  | 10,549 |  |  |  | 12,773 |  |  |  | 13,479 |  |  |  | 16,865 |
Net income available to common shareholders |  |  | 10,549 |  |  |  | 12,773 |  |  |  | 13,479 |  |  |  | 16,865 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 0.57 |  |  |  | 0.69 |  |  |  | 0.72 |  |  |  | 0.90 |
Diluted |  |  | 0.56 |  |  |  | 0.68 |  |  |  | 0.71 |  |  |  | 0.89 |
Comprehensive income |  |  | 13,789 |  |  |  | 15,789 |  |  |  | 13,596 |  |  |  | 17,597 |
Extraordinary cash dividends declared per common share |  | $ | 0.50 |  |  | $ | — |  |  | $ | — |  |  | $ | 1.00 |
Cash dividends declared per common share |  | $ | 0.12 |  |  | $ | 0.12 |  |  | $ | 0.12 |  |  | $ | 0.12 |

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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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