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v3.10.0.1

Consolidated Statement of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Accumulated Deficit
--- | --- | --- | --- | ---
Balance at Dec. 31, 2016 | $ 1,458,963 | $ 1,176 | $ 1,780,350 | $ (322,563)
Balance (in shares) at Dec. 31, 2016 |  | 117,554 |  |
Net income | 95,522 |  |  | 95,522
Retirement of common stock | (5,818) | $ (2) | (5,816) |
Retirement of common stock (in shares) |  | (175) |  |
Dividends declared on common stock | (100,134) |  |  | (100,134)
Restricted stock compensation, net of forfeitures | 8,145 |  | 8,145 |
Restricted stock grants |  | $ 5 | (5) |
Restricted stock grants (in shares) |  | 507 |  |
Stock options exercised | 6,666 | $ 3 | 6,663 |
Stock options exercised (in shares) |  | 293 |  |
Balance at Jun. 30, 2017 | 1,463,344 | $ 1,182 | 1,789,337 | (327,175)
Balance (in shares) at Jun. 30, 2017 |  | 118,179 |  |
Balance at Dec. 31, 2017 | 1,451,608 | $ 1,182 | 1,794,713 | (344,287)
Balance (in shares) at Dec. 31, 2017 |  | 118,204 |  |
Net income | 76,974 |  |  | 76,974
Retirement of common stock | (2,544) | $ (1) | (2,543) |
Retirement of common stock (in shares) |  | (118) |  |
Dividends declared on common stock | (103,011) |  |  | (103,011)
Restricted stock compensation, net of forfeitures | 7,466 |  | 7,466 |
Restricted stock grants |  | $ 4 | (4) |
Restricted stock grants (in shares) |  | 462 |  |
Cumulative effect of adoption of new accounting standard | (2,575) |  |  | (2,575)
Balance at Jun. 30, 2018 | $ 1,427,918 | $ 1,185 | $ 1,799,632 | $ (372,899)
Balance (in shares) at Jun. 30, 2018 |  | 118,548 |  |

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