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Consolidated Statements of Changes in Shareholders' Equity - USD ($) | Total | Common stock | Preferred Stock | Additional paid-in capital | Retained earnings (deficit) | Treasury stock | Parent | Noncontrolling Interest | Common Class A [Member] Common stock | Convertible Preferred Stock [Member] | Convertible Preferred Stock [Member] Common stock | Convertible Preferred Stock [Member] Preferred Stock | Convertible Preferred Stock [Member] Additional paid-in capital | Convertible Preferred Stock [Member] Parent
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2013 | $ 568,924,000 | $ 670,000 | $ 0 | $ 548,935,000 | $ 30,084,000 | $ (10,765,000) | $ 568,924,000 |  |  |  |  |  |  |
Beginning Balance, shares at Dec. 31, 2013 |  | 66,959,000 | 0 |  |  | 1,306,000 |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of Class A common stock | 181,875,000 | $ 75,000 |  | 181,800,000 |  |  | 181,875,000 |  |  |  |  |  |  |
Issuance of Class A common stock, shares |  | 7,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Issuance of Class A common stock to Board member and advisors | 16,000 | $ 0 |  | 16,000 |  |  | 16,000 |  |  |  |  |  |  |
Issuance of Class A common stock to Board member and advisors, shares |  | 30,000 |  |  |  |  |  |  |  |  |  |  |  |
Stock options expense related to equity based awards | 2,279,000 |  |  | 2,279,000 |  |  | 2,279,000 |  |  |  |  |  |  |
Stock options exercised, shares |  |  |  |  |  |  |  |  | 8,000 |  |  |  |  |
Stock options exercised | 43,000 |  |  | 43,000 |  |  | 43,000 |  | $ 0 |  |  |  |  |
Liability-based stock option awards settled | 84,000 |  |  | 84,000 |  |  | 84,000 |  |  |  |  |  |  |
Restricted stock issued | 0 | $ (2,000) |  | (2,000) |  |  | 0 |  |  |  |  |  |  |
Restricted stock issued, shares |  | 212,000 |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock forfeited | (17,000) |  |  | (17,000) |  |  | (17,000) |  |  |  |  |  |  |
Restricted stock forfeited, Shares |  |  |  |  |  | 60,000 |  |  |  |  |  |  |  |
Restricted stock and restricted stock units expense | 3,023,000 |  |  | 3,023,000 |  |  | 3,023,000 |  |  |  |  |  |  |
Cancellation of treasury stock |  | $ (13,000) |  | (10,752,000) |  | $ 10,765,000 |  |  |  |  |  |  |  |
Proceeds from issuance of senior unsecured notes | 0 |  |  |  |  |  | 0 |  |  |  |  |  |  |
Cancellation of treasury stock (shares) |  | 1,335,000 |  |  |  | 1,335,000 |  |  |  |  |  |  |  |
Capital contribution from non-controlling interest owners in less-than-wholly-owned subsidiaries | 150,000 |  |  |  |  |  |  | $ 150,000 |  |  |  |  |  |
Class B dividends declared | (150,000) |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Net (loss) income | 110,754,000 |  |  |  | 110,771,000 |  | 110,771,000 | (17,000) |  |  |  |  |  |
Cost to issue equity | (590,000) |  |  | (590,000) |  |  | (590,000) |  |  |  |  |  |  |
Ending Balance, shares at Dec. 31, 2014 |  | 73,374,000 | 0 |  |  | 31,000 |  |  |  |  |  |  |  |
Ending Balance at Dec. 31, 2014 | 866,541,000 | $ 734,000 | $ 0 | 724,819,000 | 140,855,000 | $ 0 | 866,408,000 | 133,000 |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of Class A common stock | 260,252,000 | $ 104,000 |  | 260,148,000 |  |  | 260,252,000 |  |  | $ 32,490,000 |  | $ 1,000 | $ 32,489,000 | $ 32,490,000
Issuance of Class A common stock, shares |  | 10,329,000 |  |  |  |  |  |  |  |  |  | 150,000 |  |
Conversion of Class B common stock to Class A common stock, shares |  | (1,500,000) | 150,000 |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Conversion of Convertible Securities | 0 | $ (15,000) | $ 1,000 | 14,000 |  |  | 0 |  |  |  |  |  |  |
Stock options expense related to equity based awards | 9,333,000 |  |  | 9,333,000 |  |  | 9,333,000 |  |  |  |  |  |  |
Stock options exercised, shares |  | 25,000 |  |  |  |  |  |  |  |  |  |  |  |
Stock options exercised | 10,000 |  |  | 10,000 |  |  | 10,000 |  |  |  |  |  |  |
Liability-based stock option awards settled, shares |  | 25,000 |  |  |  |  |  |  |  |  |  |  |  |
Liability-based stock option awards settled | 446,000 |  |  | 446,000 |  |  | 446,000 |  |  |  |  |  |  |
Restricted stock issued | 0 | $ (4,000) |  | (4,000) |  |  | 0 |  |  |  |  |  |  |
Restricted stock issued, shares |  | 429,000 |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock forfeited | 0 |  |  | 0 |  |  | 0 |  |  |  |  |  |  |
Restricted stock forfeited, Shares |  |  |  |  |  | 138,000 |  |  |  |  |  |  |  |
Vesting of restricted stock units |  | 52,000 |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock and restricted stock units expense | 0 | $ 1,000 |  | (1,000) |  |  | 0 |  |  |  |  |  |  |
Cancellation of treasury stock | 0 | $ 2,000 |  | 2,000 |  | $ 0 | 0 |  |  |  |  |  |  |
Proceeds from issuance of senior unsecured notes | 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Cancellation of treasury stock (shares) |  | (167,000) |  |  |  | (167,000) |  |  |  |  |  |  |  |
Capital contribution from non-controlling interest owners in less-than-wholly-owned subsidiaries | 562,000 |  |  |  |  |  |  | 562,000 |  |  |  |  |  |
Class B dividends declared |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Net (loss) income | (679,524,000) |  |  |  | (679,785,000) |  | (679,785,000) | 261,000 |  |  |  |  |  |
Cost to issue equity | $ (1,151,000) | $ 0 |  | (1,151,000) |  |  | (1,151,000) |  |  |  |  |  |  |
Ending Balance, shares at Dec. 31, 2015 | 85,564,435 | 85,567,000 | 0 |  |  | 2,000 |  |  |  |  |  |  |  |
Ending Balance at Dec. 31, 2015 | $ 488,959,000 | $ 856,000 | $ 0 | 1,026,077,000 | (538,930,000) | $ 0 | 488,003,000 | 956,000 |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of Class A common stock | 288,510,000 | $ 135,000 |  | 288,375,000 |  |  | 288,510,000 |  |  | 0 | $ 4,000 | $ 0 | (4,000) | 0
Issuance of Class A common stock, shares |  | 13,500,000 |  |  |  |  |  |  |  |  | 471,000 | 0 |  |
Issuance of Class A common stock to Board member and advisors |  | $ 1,000 |  |  |  |  |  |  |  | $ 0 |  |  | $ (1,000) | $ 0
Issuance of Class A common stock to Board member and advisors, shares |  | 51,000 |  |  |  |  |  |  |  |  |  |  |  |
Stock options expense related to equity based awards | $ 11,958,000 |  |  | 11,958,000 |  |  | 11,958,000 |  |  |  |  |  |  |
Stock options exercised, shares | 114,000 | 36,000 |  |  |  |  |  |  |  |  |  |  |  |
Stock options exercised | $ 10,000 |  |  | 10,000 |  |  | 10,000 |  |  |  |  |  |  |
Liability-based stock option awards settled, shares |  | 10,000 |  |  |  |  |  |  |  |  |  |  |  |
Liability-based stock option awards settled | 255,000 |  |  | 255,000 |  |  | 255,000 |  |  |  |  |  |  |
Restricted stock forfeited | 0 |  |  | 0 |  |  | 0 |  |  |  |  |  |  |
Restricted stock forfeited, Shares |  |  |  |  |  | 120,000 |  |  |  |  |  |  |  |
Cancellation of treasury stock | 0 | $ 1,000 |  | 1,000 |  | $ 0 | 0 |  |  |  |  |  |  |
Proceeds from issuance of senior unsecured notes | 184,625,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Cancellation of treasury stock (shares) |  | (116,000) |  |  |  | (116,000) |  |  |  |  |  |  |  |
Capital contribution from non-controlling interest owners in less-than-wholly-owned subsidiaries | 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income | (97,057,000) |  |  |  | (97,421,000) |  | (97,421,000) | 364,000 |  |  |  |  |  |
Cost to issue equity | $ (1,190,000) |  |  | (1,190,000) |  |  | (1,190,000) |  |  |  |  |  |  |
Ending Balance, shares at Dec. 31, 2016 | 99,512,886 | 99,519,000 | 0 |  |  | 6,000 |  |  |  |  |  |  |  |
Ending Balance at Dec. 31, 2016 | $ 691,445,000 | $ 995,000 | $ 0 | $ 1,325,481,000 | $ (636,351,000) | $ 0 | $ 690,125,000 | $ 1,320,000 |  |  |  |  |  |

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