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CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands | Common Stock | Treasury Stock at Cost | Additional Paid-in Capital | Retained Earnings | Net Parent Company Investment | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2014 |  |  |  |  | $ 952,291 | $ 952,291
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  |  | $ 76,376 | 2,595 | 78,971
Separation-related adjustments |  |  |  |  | (118,356) | (118,356)
Reclassification of Former Parent investment in connection with the Separation |  |  | $ 836,530 |  | $ (836,530) |
Issuance of common stock at Separation | $ 377 |  | (377) |  |  |
Share-based compensation |  |  | 2,823 |  |  | 2,823
Balance at Dec. 31, 2015 | 377 |  | 838,976 | 76,376 |  | 915,729
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  |  | 72,606 |  | 72,606
Separation-related adjustments |  |  | 664 |  |  | 664
Share-based compensation |  |  | 7,669 |  |  | 7,669
Issuance of restricted share awards under long-term equity incentive plan | 8 |  | (8) |  |  |
Repurchase of shares of common stock pursuant to Share Repurchase Program |  | $ (22,296) |  |  |  | (22,296)
Shares of common stock withheld to pay taxes on employees' equity awards |  |  | (1,825) |  |  | (1,825)
Balance at Dec. 31, 2016 | 385 | (22,296) | 845,476 | 148,982 |  | 972,547
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  |  | 158,133 |  | 158,133
Share-based compensation |  |  | 9,889 |  |  | 9,889
Issuance of restricted share awards under long-term equity incentive plan | 1 |  | (1) |  |  |
Repurchase of shares of common stock pursuant to Share Repurchase Program |  | (39,286) |  |  |  | (39,286)
Repurchase of shares of common stock pursuant to Accelerated Share Repurchase Program |  | (80,000) | (20,000) |  |  | (100,000)
Shares of common stock withheld to pay taxes on employees' equity awards |  |  | (4,764) |  |  | (4,764)
Balance at Dec. 31, 2017 | $ 386 | $ (141,582) | $ 830,600 | $ 307,115 |  | $ 996,519

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