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CONDENSED CONSOLIDATED STATEMENT OF EQUITY - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-In- Capital | Treasury Stock | Accumulated Deficit | Stockholders' Equity | Noncontrolling Interest
--- | --- | --- | --- | --- | --- | --- | ---
Balances at beginning of period at Dec. 31, 2017 | $ 1,530,291 | $ 1,913 | $ 4,126,549 | $ (56,440) | $ (2,541,294) | $ 1,530,728 | $ (437)
Balances at beginning of period (in shares) at Dec. 31, 2017 | 191,275,928 | 191,276,000 |  |  |  |  |
Compensation expense related to restricted stock grants | $ 14,675 |  | 14,675 |  |  | 14,675 |
Net income (loss) | (622,743) |  |  |  | (622,676) | (622,676) | (67)
Issuance of common stock under Associate Stock Purchase Plan | 770 | $ 1 | 769 |  |  | 770 |
Issuance of common stock under Associate Stock Purchase Plan (in shares) |  | 111,000 |  |  |  |  |
Restricted stock, net |  | $ 28 | (28) |  |  |  |
Restricted stock, net (in shares) |  | 2,805,000 |  |  |  |  |
Shares withheld for employee taxes | (2,715) | $ (4) | (2,711) |  |  | (2,715) |
Shares withheld for employee taxes (in shares) |  | (394,000) |  |  |  |  |
Other, net | 379 |  | 99 |  | 280 | 379 |
Balances at end of period at Jun. 30, 2018 | $ 920,657 | $ 1,938 | $ 4,139,353 | $ (56,440) | $ (3,163,690) | $ 921,161 | $ (504)
Balances at end of period (in shares) at Jun. 30, 2018 | 193,797,887 | 193,798,000 |  |  |  |  |

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