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Earning Per Common Share (Tables) | 6 Months Ended
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Jun. 30, 2019
Earnings Per Common Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
| Quarter Ended June 30, |  | Six-Month Period Ended June 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
| (In thousands, except per share data)
Net income | $ | 23,979 |  | $ | 19,649 |  | $ | 47,449 |  | $ | 36,566
Less: Dividends on preferred stock |  |  |  |  |  |  |  |  |  |  |
Non-convertible preferred stock (Series A, B, and D) |  | (1,628) |  |  | (1,628) |  |  | (3,256) |  |  | (3,255)
Convertible preferred stock (Series C) |  | - |  |  | (1,837) |  |  | - |  |  | (3,675)
Income available to common shareholders | $ | 22,351 |  | $ | 16,184 |  | $ | 44,193 |  | $ | 29,636
Effect of assumed conversion of the convertible preferred stock |  | - |  |  | 1,837 |  |  | - |  |  | 3,675
Income available to common shareholders assuming conversion | $ | 22,351 |  | $ | 18,021 |  | $ | 44,193 |  | $ | 33,311
Weighted average common shares and share equivalents: |  |  |  |  |  |  |  |  |  |  |
Average common shares outstanding |  | 51,330 |  |  | 43,975 |  |  | 51,317 |  |  | 43,965
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |
Average potential common shares-options |  | 350 |  |  | 113 |  |  | 335 |  |  | 54
Average potential common shares-assuming conversion of convertible preferred stock |  | - |  |  | 7,138 |  |  | - |  |  | 7,138
Total weighted average common shares outstanding and equivalents |  | 51,680 |  |  | 51,226 |  |  | 51,652 |  |  | 51,157
Earnings per common share - basic | $ | 0.44 |  | $ | 0.36 |  | $ | 0.86 |  | $ | 0.67
Earnings per common share - diluted | $ | 0.43 |  | $ | 0.35 |  | $ | 0.86 |  | $ | 0.65

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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://fasb.org/us-gaap/role/ref/legacyRef -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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