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Net Income Per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2014
Earnings Per Share, Basic and Diluted [Abstract] |
Schedule of Calculation of Numerator and Denominator in Net Income Per Common Share [Table Text Block] | The following table presents the calculation of the numerator and denominator for both basic and diluted net income per common share for the periods indicated:
| Year Ended
| December 31, 2014 |  | December 31, 2013 |  | December 31, 2012
| Net Income |  | Weighted-Average Common Shares |  | Net Income |  | Weighted- Average Common Shares |  | Net Income |  | Weighted- Average Common Shares
Net income | $ | 27,806 |  |  |  |  | $ | 68,069 |  |  |  |  | $ | 74,042 |  |  |
Preferred stock dividends | (9,176 | ) |  |  |  | (7,902 | ) |  |  |  | (2,036 | ) |  |
Net income to common shareholders | 18,630 |  |  | 54,701,485 |  |  | 60,167 |  |  | 54,647,643 |  |  | 72,006 |  |  | 53,146,416 |
Effect of dilutive instruments | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Diluted net income to common shareholders | $ | 18,630 |  |  | 54,701,485 |  |  | $ | 60,167 |  |  | 54,647,643 |  |  | $ | 72,006 |  |  | 53,146,416 |
Net income per common share: |  |  |  |  |  |  |  |  |  |  |
Basic and diluted (1) |  |  |  | $ | 0.34 |  |  |  |  |  | $ | 1.10 |  |  |  |  |  | $ | 1.35 |
(1) | For the year ended December 31, 2012, the calculation of diluted net income per common share excludes the effect of 15,000 unexercised stock option awards because their inclusion would have been anti-dilutive. The Company did not have any potentially dilutive securities outstanding for the years ended December 31, 2014 or December 31, 2013.

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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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