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Consolidated Statements of Changes in Shareholders' Equity - Unaudited - USD ($) $ in Thousands | Total | Preferred Stock | Common Stock | Additional Paid in Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Treasury Stock
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balance, preferred stock (shares) at Dec. 31, 2017 |  | 9,000,000 |  |  |  |  |
Beginning balance, common stock (shares) at Dec. 31, 2017 |  |  | 31,382,503 |  |  |  |
Beginning balance at Dec. 31, 2017 | $ 920,964 | $ 217,471 | $ 31,913 | $ 422,096 | $ 258,076 | $ (359) | $ (8,233)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income | 47,804 |  |  |  | 47,804 |  |
Other comprehensive income (loss) | (32,299) |  |  |  |  | (32,299) |
Preferred stock dividends | (7,229) |  |  |  | (7,229) |  |
Share-based compensation expense | 3,661 |  |  | 3,661 |  |  |
Exercise of warrants, shares |  |  | 5,242 |  |  |  |
Exercise of warrants, value | 112 |  | $ 5 | 107 |  |  |
Issuance of common stock under share-based compensation arrangements (shares) |  |  | 281,898 |  |  |  |
Issuance of common stock under share-based compensation arrangements | 3,214 |  | $ 282 | 2,932 |  |  |
Ending balance, preferred stock (shares) at Jun. 30, 2018 |  | 9,000,000 |  |  |  |  |
Ending balance, common stock (shares) at Jun. 30, 2018 |  |  | 31,669,643 |  |  |  |
Ending balance at Jun. 30, 2018 | 936,227 | $ 217,471 | $ 32,200 | 428,796 | 299,990 | (33,997) | (8,233)
Beginning balance, preferred stock (shares) at Mar. 31, 2018 |  | 9,000,000 |  |  |  |  |
Beginning balance, common stock (shares) at Mar. 31, 2018 |  |  | 31,466,271 |  |  |  |
Beginning balance at Mar. 31, 2018 | 919,088 | $ 217,471 | $ 31,997 | 424,099 | 279,942 | (26,188) | (8,233)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income | 23,663 |  |  |  | 23,663 |  |
Other comprehensive income (loss) | (7,809) |  |  |  |  | (7,809) |
Preferred stock dividends | (3,615) |  |  |  | (3,615) |  |
Share-based compensation expense | 1,875 |  |  | 1,875 |  |  |
Issuance of common stock under share-based compensation arrangements (shares) |  |  | 203,372 |  |  |  |
Issuance of common stock under share-based compensation arrangements | 3,025 |  | $ 203 | 2,822 | 0 |  |
Ending balance, preferred stock (shares) at Jun. 30, 2018 |  | 9,000,000 |  |  |  |  |
Ending balance, common stock (shares) at Jun. 30, 2018 |  |  | 31,669,643 |  |  |  |
Ending balance at Jun. 30, 2018 | $ 936,227 | $ 217,471 | $ 32,200 | 428,796 | 299,990 | (33,997) | (8,233)
Beginning balance, preferred stock (shares) at Dec. 31, 2018 | 9,000,000 | 9,000,000 |  |  |  |  |
Beginning balance, common stock (shares) at Dec. 31, 2018 | 31,003,028 |  | 31,003,028 |  |  |  |
Beginning balance at Dec. 31, 2018 | $ 956,816 | $ 217,471 | $ 32,252 | 434,314 | 316,651 | (22,663) | (21,209)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income | 24,735 |  |  |  | 24,735 |  |
Other comprehensive income (loss) | 12,670 |  |  |  |  | 12,670 |
Preferred stock dividends | (7,229) |  |  |  | (7,229) |  |
Share-based compensation expense | 4,425 |  |  | 4,425 |  |  |
Issuance of common stock under share-based compensation arrangements (shares) |  |  | 230,154 |  |  |  |
Issuance of common stock under share-based compensation arrangements | 559 |  | $ 231 | 328 |  |  |
Repurchase of common shares (shares) |  |  | (31,159) |  |  |  |
Repurchase of common shares | $ (571) |  |  |  |  |  | (571)
Ending balance, preferred stock (shares) at Jun. 30, 2019 | 9,000,000 | 9,000,000 |  |  |  |  |
Ending balance, common stock (shares) at Jun. 30, 2019 | 31,202,023 |  | 31,202,023 |  |  |  |
Ending balance at Jun. 30, 2019 | $ 991,405 | $ 217,471 | $ 32,483 | 439,067 | 334,157 | (9,993) | (21,780)
Beginning balance, preferred stock (shares) at Mar. 31, 2019 |  | 9,000,000 |  |  |  |  |
Beginning balance, common stock (shares) at Mar. 31, 2019 |  |  | 31,131,247 |  |  |  |
Beginning balance at Mar. 31, 2019 | 978,373 | $ 217,471 | $ 32,412 | 436,713 | 328,476 | (14,919) | (21,780)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income | 9,296 |  |  |  | 9,296 |  |
Other comprehensive income (loss) | 4,926 |  |  |  |  | 4,926 |
Preferred stock dividends | (3,615) |  |  |  | (3,615) |  |
Share-based compensation expense | 2,315 |  |  | 2,315 |  |  |
Issuance of common stock under share-based compensation arrangements (shares) |  |  | 70,776 |  |  |  |
Issuance of common stock under share-based compensation arrangements | $ 110 |  | $ 71 | 39 |  |  |
Ending balance, preferred stock (shares) at Jun. 30, 2019 | 9,000,000 | 9,000,000 |  |  |  |  |
Ending balance, common stock (shares) at Jun. 30, 2019 | 31,202,023 |  | 31,202,023 |  |  |  |
Ending balance at Jun. 30, 2019 | $ 991,405 | $ 217,471 | $ 32,483 | $ 439,067 | $ 334,157 | $ (9,993) | $ (21,780)

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