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Stockholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2015
Equity [Abstract] |
Dividends Declared | Presented below is a summary of cash dividends paid to common shareholders, recorded as a reduction of retained earnings.
| Three months ended |  | Six months ended
(in thousands, except per share data; unaudited) | June 30, 2015 | June 30, 2014 |  | June 30, 2015 | June 30, 2014
Cash dividends to common stockholders | $ | 1,313 |  | $ | 1,123 |  |  | $ | 2,620 |  | $ | 2,243 |
Cash dividends per common share | $ | 0.22 |  | $ | 0.19 |  |  | $ | 0.44 |  | $ | 0.38 |

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