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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Jan. 01, 2018 | Dec. 31, 2017
Variable Interest Entity [Line Items] |  |  |  |
Deferred tax assets | $ 31,517 |  |  | $ 29,006
Financing arrangement obligation | 398,091 |  |  | 0
Accumulated deficit | (1,393,418) |  |  | (830,279)
Increase in net cash provided by investing activities | (311,401) | $ (207,166) |  |
ASU 2016-18 |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Increase in net cash provided by investing activities |  | $ (63) |  |
Joint Venture | Chandler Freehold | Difference between revenue guidance in effect before and after topic 606 | ASU 2014-09 | Financing Arrangement |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Financing arrangement obligation |  |  | $ 393,709 |
Accumulated deficit | 424,859 |  |  |
Joint Venture | Chandler Freehold |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Distributions in excess of co-venture obligation | 0 |  |  |
Joint Venture | Chandler Freehold | Financing Arrangement |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Distributions in excess of co-venture obligation |  |  |  | 31,150
Operating Partnership |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total assets | 347,842 |  |  | 349,467
Total liabilities | 203,290 |  |  | 202,141
Operating Partnership | Property, net |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total assets | 288,521 |  |  | 288,881
Operating Partnership | Other assets |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total assets | 59,321 |  |  | 60,586
Operating Partnership | Mortgage notes payable |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total liabilities | 128,449 |  |  | 129,436
Operating Partnership | Other liabilities |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total liabilities | $ 74,841 |  |  | $ 72,705

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