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Consolidated Statements of Shareholders' Equity Statement - USD ($) $ in Thousands | Total | Preferred Stock | Preferred Stock Including Additional Paid in Capital | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Accumulated Deficit
--- | --- | --- | --- | --- | --- | --- | ---
Balance, Preferred stock, Shares outstanding at Dec. 31, 2014 |  | 4,550,000 |  |  |  |  |
Balance, Common stock, shares outstanding at Dec. 31, 2014 |  |  |  | 54,739,111 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  | 22,607 |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  |  |  | 263,829 |  |  |
Shares Paid for Tax Withholding for Share Based Compensation |  |  |  | (67,296) |  |  |
Balance, Preferred stock, Shares outstanding at Dec. 31, 2015 |  | 4,550,000 |  |  |  |  |
Balance, Common stock, shares outstanding at Dec. 31, 2015 |  |  |  | 49,047,335 |  |  |
Balance at Dec. 31, 2014 | $ 607,302 |  | $ 109,658 | $ 547 | $ 763,935 | $ 21,316 | $ (288,154)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Stock issuance | 166 |  |  | 0 | 166 |  |
Restricted stock granted, net of amortization | 2,965 |  |  | 3 | 2,962 |  |
Adjustments for tax withholding on share-based compensation | (557) |  |  | $ (1) | (556) |  |
Stock issuance costs | (37) |  |  |  | (37) |  |
Stock Repurchased During Period, Shares |  |  |  | (5,910,916) |  |  |
Stock Repurchased During Period, Value | (41,171) |  |  | $ (59) | (41,112) |  |
Net income | 16,544 |  |  |  |  |  | 16,544
Dividends on preferred stock | (9,176) |  |  |  |  |  | (9,176)
Dividends on common stock | (49,927) |  |  |  |  |  | (49,927)
Other comprehensive income | (34,084) |  |  |  |  | (34,084) |
Balance at Dec. 31, 2015 | $ 492,025 |  | 109,658 | $ 490 | 725,358 | (12,768) | (330,713)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  | 21,937 |  | 20,582 |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  |  |  | 214,878 |  |  |
Shares Paid for Tax Withholding for Share Based Compensation |  |  |  | (80,888) |  |  |
Balance, Preferred stock, Shares outstanding at Dec. 31, 2016 | 4,571,937 | 4,571,937 |  |  |  |  |
Balance, Common stock, shares outstanding at Dec. 31, 2016 | 49,153,463 |  |  | 49,153,463 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Stock issuance | $ 685 |  | 548 | $ 1 | 136 |  |
Restricted stock granted, net of amortization | 2,709 |  |  | 2 | 2,707 |  |
Adjustments for tax withholding on share-based compensation | (485) |  |  | $ (1) | (484) |  |
Stock issuance costs | (239) |  | (201) |  | (38) |  |
Stock Repurchased During Period, Shares |  |  |  | (48,444) |  |  |
Stock Repurchased During Period, Value | (310) |  |  | $ 0 | (310) |  |
Net income | 43,099 |  |  |  |  |  | 43,099
Dividends on preferred stock | (9,185) |  |  |  |  |  | (9,185)
Dividends on common stock | (41,274) |  |  |  |  |  | (41,274)
Other comprehensive income | (19,841) |  |  |  |  | (19,841) |
Balance at Dec. 31, 2016 | $ 467,184 |  | 110,005 | $ 492 | 727,369 | (32,609) | (338,073)
Preferred stock, shares issued | 4,571,937 |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  | 1,316,743 |  | 6,617,487 |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  |  |  | 138,166 |  |  |
Shares Paid for Tax Withholding for Share Based Compensation |  |  |  | (77,567) |  |  |
Balance, Preferred stock, Shares outstanding at Dec. 31, 2017 | 5,888,680 | 5,888,680 |  |  |  |  |
Balance, Common stock, shares outstanding at Dec. 31, 2017 | 55,831,549 |  |  | 55,831,549 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Stock issuance | $ 78,532 |  | 31,350 | $ 66 | 47,116 |  |
Restricted stock granted, net of amortization | 1,954 |  |  | 1 | 1,953 |  |
Adjustments for tax withholding on share-based compensation | (521) |  |  | (1) | (520) |  |
Stock issuance costs | (106) |  | (61) |  | (45) |  |
Net income | 33,893 |  |  |  |  |  | 33,893
Dividends on preferred stock | (10,794) |  |  |  |  |  | (10,794)
Dividends on common stock | (36,996) |  |  |  |  |  | (36,996)
Other comprehensive income | 23,912 |  |  |  |  | 23,912 |
Balance at Dec. 31, 2017 | $ 557,058 |  | $ 141,294 | $ 558 | $ 775,873 | $ (8,697) | $ (351,970)
Preferred stock, shares issued | 5,888,680 |  |  |  |  |  |

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