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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Capital Stock, Common | Additional Paid-in Capital | Retained Earnings | Treasury Stock
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2019 | $ 684,659 | $ 907 | $ 4,141 | $ 826,666 | $ (147,055)
Net income | 13,238 | 0 | 0 | 13,238 | 0
Dividends on common stock, $0.02 per share | (1,628) | 0 | 0 | (1,628) | 0
Repurchases of common stock | (12,278) | 0 | 0 | 0 | (12,278)
Stock-based compensation, net of tax | 697 | 0 | 291 | 0 | 406
Balance at Mar. 31, 2020 | 684,688 | 907 | 4,432 | 838,276 | (158,927)
Balance at Dec. 31, 2020 | 724,334 | 907 | 4,330 | 890,970 | (171,873)
Net income | 13,734 | 0 | 0 | 13,734 | 0
Dividends on common stock, $0.02 per share | (1,599) | 0 | 0 | (1,599) | 0
Repurchases of common stock | (14,537) | 0 | 0 | 0 | (14,537)
Stock-based compensation, net of tax | 485 | 0 | 146 | 0 | 339
Balance at Mar. 31, 2021 | $ 722,417 | $ 907 | $ 4,476 | $ 903,105 | $ (186,071)

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