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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Calculation of Basic and Diluted Earnings Per Share | The calculation of basic and diluted EPS for the years ended December 31, 2017, 2016 and 2015 are presented below.
|  | For the Year Ended December 31, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
|  | (in thousands, except earnings per share amounts) |
Basic EPS: |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders – basic |  | $ | 46,231 |  |  | $ | 77,865 |  |  | $ | 70,462 |
Basic weighted-average common shares |  |  | 19,165 |  |  |  | 19,106 |  |  |  | 18,941 |
Basic earnings per share |  | $ | 2.41 |  |  | $ | 4.08 |  |  | $ | 3.72 |
Diluted EPS: |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders - diluted |  | $ | 46,231 |  |  | $ | 77,865 |  |  | $ | 70,462 |
Diluted weighted average common shares: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares |  |  | 19,165 |  |  |  | 19,106 |  |  |  | 18,941 |
Stock options and restricted stock |  |  | 81 |  |  |  | 98 |  |  |  | 178 |
Diluted weighted average common shares |  |  | 19,246 |  |  |  | 19,204 |  |  |  | 19,119 |
Diluted earnings per common share |  | $ | 2.40 |  |  | $ | 4.05 |  |  | $ | 3.69 |
Calculation of Percentage of Net Income Allocable to Common Shareholders | The table below sets forth the reconciliation of the weighted average shares used for the basic and diluted EPS calculation.
|  | Years Ended |
|  | 2017 |  |  | 2016 |  |  | 2015 |
Basic weighted average common shares |  |  | 19,165,489 |  |  |  | 19,105,806 |  |  |  | 18,941,077 |
Add: Other common shares eligible for common dividends: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average restricted shares and stock options (including tax benefit component) |  |  | 80,377 |  |  |  | 97,844 |  |  |  | 178,109 |
Diluted weighted average common shares |  |  | 19,245,866 |  |  |  | 19,203,650 |  |  |  | 19,119,186 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of the effect of income (loss) on an entity's diluted earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96947427&loc=d3e1252-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=96947427&loc=d3e1311-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=96947427&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=96948231&loc=d3e4984-109258 + Details
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