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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Common Stock | Additional Paid-in Capital | Retained Earnings (Accumulated Deficit). Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings (Accumulated Deficit). | Accumulated Other Comprehensive Income (Loss) | Treasury Stock | Cumulative Effect, Period of Adoption, Adjustment | Total
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2019 | $ 56 | $ 1,248,216 | $ (15,922) | $ (14,813) | $ 14,960 | $ (27,985) | $ (15,922) | $ 1,220,434
Beginning Balance (in shares) at Dec. 31, 2019 | 54,788,772 |  |  |  |  |  |  |
Increase (decrease) in shareholders' equity |  |  |  |  |  |  |  |
Net income |  |  |  | 15,364 |  |  |  | 15,364
Other comprehensive income (loss) |  |  |  |  | 18,141 |  |  | 18,141
Repurchase of stock |  |  |  |  |  | (9,672) |  | (9,672)
Repurchase of stock (in shares) | (407,850) |  |  |  |  |  |  |
Issuance of treasury stock for employee stock purchase plan |  | (38) |  |  |  | 269 |  | 231
Issuance of treasury stock for employee stock purchase plan (in shares) | 14,236 |  |  |  |  |  |  |
Net issuance of treasury stock for restricted/deferred stock unit vesting and related tax |  | (179) |  |  |  | 104 |  | (75)
Net issuance of treasury stock for restricted/deferred stock unit vesting and related tax (in shares) | 5,509 |  |  |  |  |  |  |
Net issuance of treasury stock for stock options exercised, net of shares redeemed and related tax |  | (10) |  |  |  | 10 |  |
Net issuance of treasury stock for stock options exercised, net of shares redeemed and related tax (in shares) | 541 |  |  |  |  |  |  |
Cash dividends common stock |  |  |  | (12,055) |  |  |  | (12,055)
Stock dividend equivalents restricted stock units |  | 173 |  | (173) |  |  |  |
Stock-based compensation |  | 1,139 |  |  |  |  |  | 1,139
Ending balance at Mar. 31, 2020 | $ 56 | 1,249,301 |  | (27,599) | 33,101 | (37,274) |  | 1,217,585
Ending Balance (in shares) at Mar. 31, 2020 | 54,401,208 |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2020 | $ 56 | 1,253,360 |  | 20,830 | 33,309 | (37,486) |  | 1,270,069
Beginning Balance (in shares) at Dec. 31, 2020 | 54,404,379 |  |  |  |  |  |  |
Increase (decrease) in shareholders' equity |  |  |  |  |  |  |  |
Net income |  |  |  | 37,816 |  |  |  | 37,816
Other comprehensive income (loss) |  |  |  |  | (29,488) |  |  | (29,488)
Repurchase of stock |  |  |  |  |  | (1,510) |  | (1,510)
Repurchase of stock (in shares) | (59,000) |  |  |  |  |  |  |
Cash dividends common stock |  |  |  | (12,513) |  |  |  | (12,513)
Stock dividend equivalents restricted stock units |  | 236 |  | (236) |  |  |  |
Stock-based compensation |  | 1,448 |  |  |  |  |  | 1,448
Ending balance at Mar. 31, 2021 | $ 56 | $ 1,255,044 |  | $ 45,897 | $ 3,821 | $ (38,996) |  | $ 1,265,822
Ending Balance (in shares) at Mar. 31, 2021 | 54,345,379 |  |  |  |  |  |  |

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