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Related Party Transactions (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015
Related Party Transaction |  |  |  |
Distributions from unconsolidated joint ventures |  | $ 6,400 | $ 0 |
AH LLC |  |  |  |
Related Party Transaction |  |  |  |
Noncontrolling interest equity interest ownership | 18.60% | 18.60% |  | 22.10%
Due from affiliates | $ 1,300 | $ 1,300 |  |
Due to affiliate |  |  |  | $ 4,100
AH LLC | Class A Units |  |  |  |
Related Party Transaction |  |  |  |
Units owned (in shares) | 54,276,644 | 54,276,644 |  | 14,440,670
AH LLC | Series C Convertible Units |  |  |  |
Related Party Transaction |  |  |  |
Units owned (in shares) | 0 | 0 |  | 31,085,974
AH LLC | Series D Convertible Units |  |  |  |
Related Party Transaction |  |  |  |
Units owned (in shares) | 0 | 0 |  | 4,375,000
AH LLC | Series E Convertible Units |  |  |  |
Related Party Transaction |  |  |  |
Units owned (in shares) | 0 | 0 |  | 4,375,000
AH LLC | Class A common shares |  |  |  |
Related Party Transaction |  |  |  |
Noncontrolling interest equity interest ownership | 2.80% | 2.80% |  | 3.30%
AH LLC | Class B common shares |  |  |  |
Related Party Transaction |  |  |  |
Shares owned (in shares) | 635,075 | 635,075 |  | 635,075
Corporate Joint Venture |  |  |  |
Related Party Transaction |  |  |  |
Distributions from unconsolidated joint ventures | $ 400 |  |  |
Alaska Permanent Fund Corporation | Corporate Joint Venture |  |  |  |
Related Party Transaction |  |  |  |
Distributions from unconsolidated joint ventures | 1,600 |  |  |
Alaska Joint Venture Acquisition |  |  |  |
Related Party Transaction |  |  |  |
Contribution to joint venture |  | $ 40,000 |  | $ 40,000
Equity method investment in joint venture | $ 33,300 | $ 33,300 |  |
Equity ownership percentage in joint venture | 20.00% | 20.00% |  |
Alaska Joint Venture Acquisition | Alaska Permanent Fund Corporation |  |  |  |
Related Party Transaction |  |  |  |
Contribution to joint venture |  | $ 160,000 |  | $ 160,000

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