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Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands | Common Stock [Member] | Retained Earnings [Member] | AOCI Attributable to Parent [Member] | Treasury Stock [Member] | Total
--- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2017 | 7,207,762 |  |  |  |
Balance at Dec. 31, 2017 | $ 84,859 | $ 47,431 | $ 1,091 | $ (13,518) | $ 119,863
Change in accounting principle, ASC 2016-01 |  | 141 | (141) |  |
Change in accounting principle, ASC 2018-02 |  | (187) | 187 |  |
Net income |  | 12,431 |  |  | 12,431
Other comprehensive income (loss) |  |  | (1,291) |  | (1,291)
Dividend reinvestment and purchase plan (in shares) | 24,512 |  |  |  |
Dividend reinvestment and purchase plan | $ 618 |  |  |  | $ 618
Stock options exercised (in shares) | 17,600 |  |  |  | 24,600
Stock options exercised | $ 168 |  |  |  | $ 168
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total | 11,120 |  |  |  |
Stock-based compensation | $ 280 |  |  |  | 280
Cash dividends |  | (3,779) |  |  | $ (3,779)
Balance (in shares) at Dec. 31, 2018 | 7,260,994 |  |  |  | 6,488,664
Balance at Dec. 31, 2018 | $ 85,925 | 56,037 | (154) | (13,518) | $ 128,290
Net income |  | 12,711 |  |  | 12,711
Other comprehensive income (loss) |  |  | 1,996 |  | 1,996
Dividend reinvestment and purchase plan (in shares) | 17,866 |  |  |  |
Dividend reinvestment and purchase plan | $ 372 |  |  |  | $ 372
Stock options exercised (in shares) | 400 |  |  |  | 400
Stock options exercised | $ 4 |  |  |  | $ 4
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total | 15,532 |  |  |  |
Stock-based compensation | $ 316 |  |  |  | 316
Cash dividends |  | (3,685) |  |  | (3,685)
Treasury shares acquired |  |  |  | (2,229) | $ (2,229)
Balance (in shares) at Dec. 31, 2019 | 7,294,792 |  |  |  | 6,423,630
Balance at Dec. 31, 2019 | $ 86,617 | $ 65,063 | $ 1,842 | $ (15,747) | $ 137,775

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