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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Retained Earnings | Accumulated Other Comprehensive Loss (AOCI), Net of Taxes
--- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2016 |  | 6,127,314 |  |
Balance at Dec. 31, 2016 | $ 230,563 | $ 87,392 | $ 146,464 | $ (3,293)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Net income | 14,866 |  | 14,866 |
Other comprehensive income (loss) | 2,063 |  |  | 2,063
Stock options exercised, net of shares surrendered for cashless exercises and tax withholdings (in shares) |  | 8,786 |  |
Stock options exercised, net of shares surrendered for cashless exercises and tax withholdings | 28 | $ 28 |  |
Stock issued under employee stock purchase plan (in shares) |  | 280 |  |
Stock issued under employee stock purchase plan | 17 | $ 17 |  |
Stock issued under employee stock ownership plan (ESOP) (in shares) |  | 21,732 |  |
Stock issued under employee stock ownership plan (ESOP) | 1,335 | $ 1,335 |  |
Stock-based compensation - stock options | 423 | 423 |  |
Stock-based compensation - restricted stock | 634 | $ 634 |  |
Cash dividends paid on common stock ($0.29 per share) | (5,103) |  | (5,103) |
Stock purchased by directors under director stock plan (in shares) |  | 531 |  |
Stock purchased by directors under director stock plan | 35 | $ 35 |  |
Stock issued in payment of director fees (in shares) |  | 2,878 |  |
Stock issued in payment of director fees | 188 | $ 188 |  |
Restricted stock granted (in shares) |  | 14,230 |  |
Restricted stock granted | 0 |  |  |
Balance (in shares) at Sep. 30, 2017 |  | 6,175,751 |  |
Balance at Sep. 30, 2017 | 245,049 | $ 90,052 | 156,227 | (1,230)
Balance (in shares) at Jun. 30, 2017 |  | 6,160,952 |  |
Balance at Jun. 30, 2017 | 240,733 | $ 88,949 | 152,883 | (1,099)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Net income | 5,132 |  | 5,132 |
Other comprehensive income (loss) | (131) |  |  | (131)
Stock options exercised, net of shares surrendered for cashless exercises and tax withholdings (in shares) |  | 2,893 |  |
Stock options exercised, net of shares surrendered for cashless exercises and tax withholdings | 0 | $ 0 |  |
Stock issued under employee stock ownership plan (ESOP) (in shares) |  | 10,000 |  |
Stock issued under employee stock ownership plan (ESOP) | 637 | $ 637 |  |
Stock-based compensation - stock options | 141 | 141 |  |
Stock-based compensation - restricted stock | 206 | $ 206 |  |
Cash dividends paid on common stock ($0.29 per share) | (1,788) |  | (1,788) |
Stock purchased by directors under director stock plan (in shares) |  | 216 |  |
Stock purchased by directors under director stock plan | 13 | $ 13 |  |
Stock issued in payment of director fees (in shares) |  | 1,690 |  |
Stock issued in payment of director fees | 106 | $ 106 |  |
Balance (in shares) at Sep. 30, 2017 |  | 6,175,751 |  |
Balance at Sep. 30, 2017 | $ 245,049 | $ 90,052 | 156,227 | (1,230)
Balance (in shares) at Dec. 31, 2017 | 6,921,542 | 6,921,542 |  |
Balance at Dec. 31, 2017 | $ 297,025 | $ 143,967 | 155,544 | (2,486)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Net income | 22,960 |  | 22,960 |
Other comprehensive income (loss) | (6,494) |  |  | (6,494)
Stock options exercised, net of shares surrendered for cashless exercises and tax withholdings (in shares) |  | 51,826 |  |
Stock options exercised, net of shares surrendered for cashless exercises and tax withholdings | 534 | $ 534 |  |
Stock issued under employee stock purchase plan (in shares) |  | 386 |  |
Stock issued under employee stock purchase plan | 28 | $ 28 |  |
Stock issued under employee stock ownership plan (ESOP) (in shares) |  | 11,300 |  |
Stock issued under employee stock ownership plan (ESOP) | 898 | $ 898 |  |
Stock-based compensation - stock options | 566 | 566 |  |
Stock-based compensation - restricted stock | 848 | $ 848 |  |
Cash dividends paid on common stock ($0.29 per share) | (6,419) |  | (6,419) |
Stock purchased by directors under director stock plan (in shares) |  | 499 |  |
Stock purchased by directors under director stock plan | 37 | $ 37 |  |
Stock issued in payment of director fees (in shares) |  | 2,735 |  |
Stock issued in payment of director fees | 204 | $ 204 |  |
Stock repurchased, net of commissions (in shares) |  | (17,943) |  |
Stock repurchased, net of commissions | (1,539) | $ (1,539) |  |
Reclassification of stranded tax effects in AOCI | 0 |  | 638 | (638)
Restricted stock granted (in shares) |  | 18,520 |  |
Restricted stock granted | 0 |  |  |
Restricted stock surrendered for tax withholdings upon vesting (in shares) |  | (658) |  |
Restricted stock surrendered for tax withholdings upon vesting | $ (45) | $ (45) |  |
Restricted stock forfeited / cancelled (in shares) |  | (6,028) |  |
Restricted stock forfeited / cancelled |  | $ 0 |  |
Balance (in shares) at Sep. 30, 2018 | 6,982,179 | 6,982,179 |  |
Balance at Sep. 30, 2018 | $ 308,603 | $ 145,498 | 172,723 | (9,618)
Balance (in shares) at Jun. 30, 2018 |  | 6,991,821 |  |
Balance at Jun. 30, 2018 | 304,198 | $ 146,195 | 166,281 | (8,278)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Net income | 8,680 |  | 8,680 |
Other comprehensive income (loss) | (1,340) |  |  | (1,340)
Stock options exercised, net of shares surrendered for cashless exercises and tax withholdings (in shares) |  | 1,751 |  |
Stock options exercised, net of shares surrendered for cashless exercises and tax withholdings | 0 | $ 0 |  |
Stock issued under employee stock purchase plan (in shares) |  | 121 |  |
Stock issued under employee stock purchase plan | 9 | $ 9 |  |
Stock issued under employee stock ownership plan (ESOP) (in shares) |  | 3,400 |  |
Stock issued under employee stock ownership plan (ESOP) | 297 | $ 297 |  |
Stock-based compensation - stock options | 124 | 124 |  |
Stock-based compensation - restricted stock | 176 | $ 176 |  |
Cash dividends paid on common stock ($0.29 per share) | (2,238) |  | (2,238) |
Stock purchased by directors under director stock plan (in shares) |  | 239 |  |
Stock purchased by directors under director stock plan | 19 | $ 19 |  |
Stock issued in payment of director fees (in shares) |  | 1,392 |  |
Stock issued in payment of director fees | 113 | $ 113 |  |
Stock repurchased, net of commissions (in shares) |  | (16,545) |  |
Stock repurchased, net of commissions | $ (1,435) | $ (1,435) |  |
Balance (in shares) at Sep. 30, 2018 | 6,982,179 | 6,982,179 |  |
Balance at Sep. 30, 2018 | $ 308,603 | $ 145,498 | $ 172,723 | $ (9,618)

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