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Net Income Per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] |  |  |  |
Net income (loss) | $ 30,866 | $ (4,627) | $ 24,133 | $ 46,510
Preferred Stock Dividends | (2,294) | (2,294) | (6,882) | (5,608)
Net income (loss) to common shareholders | 28,572 | (6,921) | 17,251 | 40,902
Weighted average common shares - basic and diluted | 54,731,414 | 54,903,637 | 54,689,762 | 54,727,950
Effect of dilutive stock options on net income (loss) | 0 | 0 | 0 | 0
Diluted net income (loss) to common shareholders | $ 28,572 | $ (6,921) | $ 17,251 | $ 40,902
Effect of dilutive instruments on weighted average common shares | 0 | 0 | 0 | 0
Diluted, Weighted Average Number Common Shares | 54,731,414 | 54,903,637 | 54,689,762 | 54,727,950
Net income (loss) per common share - basic and diluted | $ 0.52 | $ (0.13) | $ 0.32 | $ 0.75

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