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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Stockholders' Equity, Total | Common Stock | Additional Paid-in Capital | Retained Earnings | Other Comprehensive Income (Loss) | Treasury Stock
--- | --- | --- | --- | --- | --- | ---
Equity Balance at Dec. 31, 2015 |  | $ 398,227 | $ 139 | $ 24,371 | $ 368,053 | $ 5,664 | $ 0
Stock issued under Stock Option Plan |  | 2,593 | 0 | 1,571 | 0 | 0 | 1,022
Common dividends declared | [1] | (12,250) | 0 | 0 | (12,250) | 0 | 0
Other comprehensive gain (loss) |  | (4,106) | 0 | 0 | 0 | (4,106) | 0
Reclassification of Treasury Stock per Maryland Law |  | 0 | 1 | 0 | 1,021 | 0 | (1,022)
Common dividends declared | [1] | (12,250) | 0 | 0 | (12,250) | 0 | 0
Net income |  | 45,342 | 0 | 0 | 45,342 | 0 | 0
Common dividends declared | [1] | (12,250) | 0 | 0 | (12,250) | 0 | 0
Equity Balance at Dec. 31, 2016 |  | 429,806 | 140 | 25,942 | 402,166 | 1,558 | 0
Stock issued under Stock Option Plan |  | 3,811 | 0 | 2,261 | 0 | 0 | 1,550
Common dividends declared | [2] | (13,202) | 0 | 0 | (13,202) | 0 | 0
Other comprehensive gain (loss) |  | (317) | 0 | 0 | 0 | (317) | 0
Reclassification of Treasury Stock per Maryland Law |  | 0 | 1 | 0 | 1,549 | 0 | (1,550)
Common dividends declared | [2] | (13,202) | 0 | 0 | (13,202) | 0 | 0
Net income |  | 51,564 | 0 | 0 | 51,564 | 0 | 0
Common dividends declared | [2] | (13,202) | 0 | 0 | (13,202) | 0 | 0
Equity Balance at Dec. 31, 2017 |  | 471,662 | 141 | 28,203 | 442,077 | 1,241 | 0
Stock issued under Stock Option Plan |  | 2,961 | 0 | 1,918 | 0 | 0 | 1,043
Common dividends declared | [3] | (16,966) | 0 | 0 | (16,966) | 0 | 0
Other comprehensive gain (loss) |  | 8,114 | 0 | 0 | 0 | 8,114 | 0
Reclassification of Treasury Stock per Maryland Law |  | 0 | 1 | 0 | 139 | 0 | (140)
Common dividends declared | [3] | (16,966) | 0 | 0 | (16,966) | 0 | 0
Net income |  | 67,109 | 0 | 0 | 67,109 | 0 | 0
Common dividends declared | [3] | (16,966) | 0 | 0 | (16,966) | 0 | 0
Purchase of the Company's common stock |  | (903) | 0 | 0 | 0 | 0 | (903)
Reclassification of stranded tax effects resulting from change in Federal income tax rate |  | 0 | 0 | 0 | (272) | 272 | 0
Equity Balance at Dec. 31, 2018 |  | $ 531,977 | $ 142 | $ 30,121 | $ 492,087 | $ 9,627 | $ 0
[1] | $.88 per share dividend.
[2] | $.94 per share dividend.
[3] | $1.20 per share dividend.

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