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Consolidated Statements of Stockholders' Equity - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands | Total | Capital Stock, Common | Additional Paid-in Capital | Retained Earnings | Treasury Stock
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 | $ 574,645 | $ 907 | $ 3,518 | $ 694,174 | $ (123,954)
Net income | 31,182 | 0 | 0 | 31,182 | 0
Dividends on common stock, $0.04 per share | (3,311) | 0 | 0 | (3,311) | 0
Repurchases of common stock | (20,922) | 0 | 0 | 0 | 20,922
Stock-based compensation, net of tax | 195 | 0 | (56) | 0 | 251
Balance at Jun. 30, 2018 | $ 581,789 | $ 907 | $ 3,462 | $ 722,045 | $ (144,625)

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