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Acquisitions and Dispositions - RJ JV Acquisition 2 (Details 4) |  | 12 Months Ended
--- | --- | ---
Jun. 14, 2013 USD ($) shares | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Business Acquisition [Line Items] |  |  |  |
Gain on remeasurement of equity method investment |  | $ 0 | $ 0 | $ 10,945,000
Formation of consolidated joint venture |  |  |  | $ 500,000
RJ Joint Ventures Acquisition |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Fair value of existing Class B interest | $ 7,615,000 |  |  |
Carrying value of Class B interest | (3,330,000) |  |  |
Gain on remeasurement of equity method investment | $ 10,945,000 |  |  |
AH LLC | Class A common shares |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Preferred units, units converted to common shares | shares | 653,492 |  |  |
Fair value of convertible securities | $ 10,500,000 |  |  |
Formation of consolidated joint venture | 11,300,000 |  |  |
Carrying value of preferred units | $ 0 |  |  |
Conversion ratio | 1 |  |  |

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