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Combined Consolidated Statements of Changes in Equity/Capital - USD ($) $ in Thousands | Total | Additional Paid-in-Capital | Retained Earnings | Accumulated Other Comprehensive Income | Noncontrolling Interests Operating Partnership | Noncontrolling Interests Consolidated Joint Ventures | Class A Common Stock Common Stock | Class B Common Stock Common Stock | Preferred Units Series A preferred units | Preferred Units Series B Preferred Units | Common Units | LP Units
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2013 |  |  |  |  |  |  |  |  | $ 825,985 | $ 290,847 | $ 59,565 |
Increase (Decrease) in Partners' Capital |  |  |  |  |  |  |  |  |  |  |  |
Contributions | $ 1,841 |  |  |  |  | $ 1,841 |  |  |  |  |  |
Distributions | (50,502) |  |  |  | $ (47,926) | (2,207) |  |  |  | (369) |  |
Ending Balance at Dec. 31, 2014 |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Beginning Balance at Dec. 31, 2013 | 1,185,234 | $ 0 | $ 0 | $ 0 | 0 | 8,837 | $ 0 |  |  |  |  |
Beginning Balance (in shares) at Dec. 31, 2013 |  |  |  |  |  |  | 0 | 0 |  |  |  |
Increase Decrease in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |
Equity based compensation | 14,451 | 332 |  |  | 13,829 |  |  |  |  | 290 |  |
Issuance of common stock (IPO) | 259,037 | 259,021 |  |  |  |  | $ 16 |  |  |  |  |
Issuance of common stock (IPO) (in shares) |  |  |  |  |  |  | 16,925,000 |  |  |  |  |
Shares acquired to satisfy minimum required federal and state tax withholding on vesting restricted stock | (125) |  |  |  | (125) |  |  |  |  |  |  |
Shares acquired to satisfy minimum required federal and state tax withholding on vesting restricted stock |  |  |  |  |  |  |  | (10,000) |  |  |  |
Forfeitures (in shares) |  |  |  |  |  |  | (40,000) | (6,000) |  |  |  |
Offering costs | (20,523) | (20,523) |  |  |  |  |  |  |  |  |  |
Reorganization transactions (in shares) |  |  |  |  |  |  |  |  | (828,577) | (291,680) | (60,441) | $ 1,180,698
Exchange of capital for common stock |  | 468,694 |  | 14,874 |  |  | $ 34 |  |  |  |  | (483,602)
Exchange of capital for common stock (in shares) |  |  |  |  |  |  | 33,673,000 |  |  |  |  |
Exchange of predecessor LP Units for common stock |  |  |  |  | 697,096 |  |  |  |  |  |  | $ (697,096)
Exchange of predecessor LP Units for common stock (in shares) |  |  |  |  |  |  |  | 48,537,000 |  |  |  |
Exchange of noncontrolling interest for common stock |  | 12,502 |  | 324 | (12,827) |  | $ 1 |  |  |  |  |
Exchange of noncontrolling interest for common stock (in shares) |  |  |  |  |  |  | 874,374 | (874,374) |  |  |  |
Adjustment to tax receivable agreement as a result of the exchange of Class B shares | 152 | 152 |  |  |  |  |  |  |  |  |  |
Net income (loss) | 97,626 |  | 44,187 |  | 66,437 | (370) |  |  | (7,471) | (2,631) | (2,526) |
Other comprehensive income (loss) | 18,016 |  |  | 488 | 520 |  |  |  | $ 10,063 | $ 3,543 | $ 3,402 |
Rebalancing of ownership percentage between Company and Operating Partnership |  | 5,360 |  | (30) | (5,330) |  |  |  |  |  |  |
Ending Balance (in shares) at Dec. 31, 2014 |  |  |  |  |  |  | 51,432,000 | 47,647,000 |  |  |  |
Ending Balance at Dec. 31, 2014 | 1,505,207 | 725,538 | 44,187 | 15,656 | 711,674 | 8,101 | $ 51 |  |  |  |  |
Increase (Decrease) in Partners' Capital |  |  |  |  |  |  |  |  |  |  |  |
Contributions | 74 |  |  |  |  | 74 |  |  |  |  |  |
Distributions | (56,863) |  |  |  | (56,274) | (589) |  |  |  |  |  |
Increase Decrease in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |
Amendment of the par value of the Class B shares from no par value per share to $0.001 per share |  |  |  |  | (47) |  |  | $ 47 |  |  |  |
Equity based compensation | 11,342 | 308 |  |  | 11,034 |  |  |  |  |  |  |
Grants of restricted stock |  | (1) |  |  |  |  | $ 1 |  |  |  |  |
Grants of restricted stock (in shares) |  |  |  |  |  |  | 726,000 |  |  |  |  |
Shares acquired to satisfy minimum required federal and state tax withholding on vesting restricted stock | (4,885) | (4,817) |  |  | (68) |  |  |  |  |  |  |
Shares acquired to satisfy minimum required federal and state tax withholding on vesting restricted stock |  |  |  |  |  |  | (262,000) | (4,000) |  |  |  |
Forfeitures (in shares) |  |  |  |  |  |  | (188,000) | 0 |  |  |  |
Dividends declared | (41,314) |  | (41,314) |  |  |  |  |  |  |  |  |
Exchange of noncontrolling interest for common stock | 0 | 50,449 |  | 620 | (51,069) |  | $ 3 | $ (3) |  |  |  |
Exchange of noncontrolling interest for common stock (in shares) |  |  |  |  |  |  | 3,415,389 | (3,415,389) |  |  |  |
Adjustment to tax receivable agreement as a result of the exchange of Class B shares | 242 | 242 |  |  |  |  |  |  |  |  |  |
Net income (loss) | 89,458 |  | 46,698 |  | 43,338 | (578) |  |  |  |  |  |
Other comprehensive income (loss) | (4,119) |  |  | (2,027) | (2,092) |  |  |  |  |  |  |
Rebalancing of ownership percentage between Company and Operating Partnership | 0 | (5,203) |  | 194 | 5,009 |  |  |  |  |  |  |
Ending Balance (in shares) at Sep. 30, 2015 |  |  |  |  |  |  | 55,123,000 | 44,228,000 |  |  |  |
Ending Balance at Sep. 30, 2015 | $ 1,499,142 | $ 766,516 | $ 49,571 | $ 14,443 | $ 661,505 | $ 7,008 | $ 55 | $ 44 |  |  |  |

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