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Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Thousands | Total | Series A 3% Preferred Stock [Member] | Series B-1 8.48% Preferred Stock [Member] | Preferred Equity [Member] | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings [Member] | Retained Earnings [Member] Series A 3% Preferred Stock [Member] | Retained Earnings [Member] Series B-1 8.48% Preferred Stock [Member] | Accumulated Other Comprehensive Loss [Member] | Treasury Stock [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Cumulative-effect adjustment |  |  |  |  |  | $ (279) | $ 279 |  |  |  |
Balance at Dec. 31, 2016 | $ 320,054 |  |  | $ 17,340 | $ 147 | 81,755 | 237,687 |  |  | $ (13,951) | $ (2,924)
Adjusted Balance at Dec. 31, 2016 | 320,054 |  |  | 17,340 | 147 | 81,476 | 237,966 |  |  | (13,951) | (2,924)
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |
Net income | 14,189 |  |  |  |  |  | 14,189 |  |  |  |
Other comprehensive income, net of tax | 2,658 |  |  |  |  |  |  |  |  | 2,658 |
Purchases of common stock for treasury | (148) |  |  |  |  |  |  |  |  |  | (148)
Common stock issued | 16,708 |  |  |  | 6 | 16,702 |  |  |  |  |
Share-based compensation plans: |  |  |  |  |  |  |  |  |  |  |
Share-based compensation | 605 |  |  |  |  | 605 |  |  |  |  |
Stock options exercised | 379 |  |  |  |  | 5 |  |  |  |  | 374
Restricted stock awards issued, net |  |  |  |  |  | 29 |  |  |  |  | (29)
Stock awards | 115 |  |  |  |  | 39 |  |  |  |  | 76
Cash dividends declared: |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividends per share |  | $ (2) | $ (729) |  |  |  |  | $ (2) | $ (729) |  |
Common stock dividends per share | (6,188) |  |  |  |  |  | (6,188) |  |  |  |
Balance at Jun. 30, 2017 | 347,641 |  |  | 17,340 | 153 | 98,856 | 245,236 |  |  | (11,293) | (2,651)
Balance at Mar. 31, 2017 |  |  |  |  |  |  |  |  |  | (13,186) |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |
Net income | 6,246 |  |  |  |  |  |  |  |  |  |
Other comprehensive income, net of tax | 1,893 |  |  |  |  |  |  |  |  | 1,893 |
Balance at Jun. 30, 2017 | 347,641 |  |  | 17,340 | 153 | 98,856 | 245,236 |  |  | (11,293) | (2,651)
Balance at Dec. 31, 2017 | 381,177 |  |  | 17,329 | 161 | 121,058 | 257,078 |  |  | (11,916) | (2,533)
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |
Net income | 21,458 |  |  |  |  |  | 21,458 |  |  |  |
Other comprehensive income, net of tax | (8,380) |  |  |  |  |  |  |  |  | (8,380) |
Purchases of common stock for treasury | (113) |  |  |  |  |  |  |  |  |  | (113)
Share-based compensation plans: |  |  |  |  |  |  |  |  |  |  |
Share-based compensation | 759 |  |  |  |  | 759 |  |  |  |  |
Stock options exercised | 309 |  |  |  |  | (15) |  |  |  |  | 324
Restricted stock awards issued, net |  |  |  |  |  | 303 |  |  |  |  | (303)
Stock awards | 92 |  |  |  |  | 39 |  |  |  |  | 53
Cash dividends declared: |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividends per share |  | $ (2) | $ (729) |  |  |  |  | $ (2) | $ (729) |  |
Common stock dividends per share | (7,634) |  |  |  |  |  | (7,634) |  |  |  |
Balance at Jun. 30, 2018 | 386,937 |  |  | 17,329 | 161 | 122,144 | 270,171 |  |  | (20,296) | (2,572)
Balance at Mar. 31, 2018 |  |  |  |  |  |  |  |  |  | (18,163) |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |
Net income | 12,170 |  |  |  |  |  |  |  |  |  |
Other comprehensive income, net of tax | (2,133) |  |  |  |  |  |  |  |  | (2,133) |
Balance at Jun. 30, 2018 | $ 386,937 |  |  | $ 17,329 | $ 161 | $ 122,144 | $ 270,171 |  |  | $ (20,296) | $ (2,572)

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