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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Common Stock | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Treasury Stock | Total Stockholders' Equity | Noncontrolling Interest | Total
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 | $ 108,862 | $ 363,794 | $ (670) | $ (3,408) | $ 468,578 | $ 89 | $ 468,667
Balance (in shares) at Dec. 31, 2017 | 25,025,933 |  |  |  |  |  |
Adoption of ASU | Accounting Standards Update 2018-02 |  | 173 | (173) |  | 0 |  | 0
Adoption of ASU | Accounting Standards Update 2014-09 |  | 24 |  |  | 24 |  | 24
Adoption of ASU | Accounting Standards Update 2016-01 |  | 68 | (68) |  | 0 |  | 0
Net income |  | 38,478 |  |  | 38,478 |  | 38,478
Other comprehensive income (loss), net of tax |  |  | (8,799) |  | (8,799) |  | (8,799)
Comprehensive income (loss) |  |  |  |  |  |  | 29,679
Cash dividends declared |  | (12,133) |  |  | (12,133) |  | (12,133)
Treasury shares purchased under deferred directors' plan | $ 229 |  |  | (229) | 0 |  | 0
Treasury shares purchased under deferred directors' plan (in shares) | (4,711) |  |  |  |  |  |
Treasury shares sold and distributed under deferred directors' plan | $ (115) |  |  | 115 | 0 |  | 0
Treasury shares sold and distributed under deferred directors' plan (in shares) | 5,636 |  |  |  |  |  |
Stock activity under equity incentive plans | $ (2,435) |  |  |  | (2,435) |  | (2,435)
Stock activity under equity incentive plans (in shares) | 99,679 |  |  |  |  |  |
Stock based compensation expense | $ (2,682) |  |  |  | (2,682) |  | (2,682)
Balance at Jun. 30, 2018 | $ 109,223 | 390,404 | (9,710) | (3,522) | 486,395 | 89 | 486,484
Balance (in shares) at Jun. 30, 2018 | 25,126,537 |  |  |  |  |  |
Balance at Mar. 31, 2018 | $ 107,860 | 376,850 | (7,988) | (3,478) | 473,244 | 89 | 473,333
Balance (in shares) at Mar. 31, 2018 | 25,124,441 |  |  |  |  |  |
Net income |  | 20,142 |  |  | 20,142 |  | 20,142
Other comprehensive income (loss), net of tax |  |  | (1,722) |  | (1,722) |  | (1,722)
Comprehensive income (loss) |  |  |  |  |  |  | 18,420
Cash dividends declared |  | (6,588) |  |  | (6,588) |  | (6,588)
Treasury shares purchased under deferred directors' plan | $ 44 |  |  | (44) | 0 |  | 0
Treasury shares purchased under deferred directors' plan (in shares) | (904) |  |  |  |  |  |
Stock activity under equity incentive plans | $ 48 |  |  |  | 48 |  | 48
Stock activity under equity incentive plans (in shares) | 3,000 |  |  |  |  |  |
Stock based compensation expense | $ (1,271) |  |  |  | (1,271) |  | (1,271)
Balance at Jun. 30, 2018 | $ 109,223 | 390,404 | (9,710) | (3,522) | 486,395 | 89 | 486,484
Balance (in shares) at Jun. 30, 2018 | 25,126,537 |  |  |  |  |  |
Balance at Dec. 31, 2018 | $ 112,383 | 419,179 | (6,191) | (3,756) | 521,615 | 89 | 521,704
Balance (in shares) at Dec. 31, 2018 | 25,128,773 |  |  |  |  |  |
Adoption of ASU | Accounting Standards Update 2017-08 |  | (1,327) |  |  | (1,327) |  | (1,327)
Net income |  | 43,395 |  |  | 43,395 |  | 43,395
Other comprehensive income (loss), net of tax |  |  | 15,691 |  | 15,691 |  | 15,691
Comprehensive income (loss) |  |  |  |  |  |  | 59,086
Cash dividends declared |  | (14,278) |  |  | (14,278) |  | (14,278)
Cashless exercise of warrants (in shares) | 224,066 |  |  |  |  |  |
Cashless exercise of warrants | $ 0 |  |  |  | 0 |  | 0
Treasury shares purchased under deferred directors' plan | $ 246 |  |  | (246) | 0 |  | 0
Treasury shares purchased under deferred directors' plan (in shares) | (5,656) |  |  |  |  |  |
Treasury shares sold and distributed under deferred directors' plan | $ (118) |  |  | 118 | 0 |  | 0
Treasury shares sold and distributed under deferred directors' plan (in shares) | 5,699 |  |  |  |  |  |
Stock activity under equity incentive plans | $ 2,089 |  |  |  | 2,089 |  | 2,089
Stock activity under equity incentive plans (in shares) | 89,418 |  |  |  |  |  |
Stock based compensation expense | $ (2,267) |  |  |  | (2,267) |  | (2,267)
Balance at Jun. 30, 2019 | $ 112,689 | 446,969 | 9,500 | (3,884) | 565,274 | 89 | 565,363
Balance (in shares) at Jun. 30, 2019 | 25,442,300 |  |  |  |  |  |
Balance at Mar. 31, 2019 | $ 111,571 | 432,953 | 2,487 | (3,833) | 543,178 | 89 | 543,267
Balance (in shares) at Mar. 31, 2019 | 25,442,827 |  |  |  |  |  |
Net income |  | 21,713 |  |  | 21,713 |  | 21,713
Other comprehensive income (loss), net of tax |  |  | 7,013 |  | 7,013 |  | 7,013
Comprehensive income (loss) |  |  |  |  |  |  | 28,726
Cash dividends declared |  | (7,697) |  |  | (7,697) |  | (7,697)
Treasury shares purchased under deferred directors' plan | $ 51 |  |  | (51) | 0 |  | 0
Treasury shares purchased under deferred directors' plan (in shares) | (1,078) |  |  |  |  |  |
Stock activity under equity incentive plans |  |  |  |  | 0 |  | 0
Stock activity under equity incentive plans (in shares) | 551 |  |  |  |  |  |
Stock based compensation expense | $ (1,067) |  |  |  | (1,067) |  | (1,067)
Balance at Jun. 30, 2019 | $ 112,689 | $ 446,969 | $ 9,500 | $ (3,884) | $ 565,274 | $ 89 | $ 565,363
Balance (in shares) at Jun. 30, 2019 | 25,442,300 |  |  |  |  |  |

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