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Basis of Presentation and Recently Issued Accounting Pronouncements (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Net change in net cash used in investing activities $ (114,272) $ 152,975    
Accounting Standards Update 2016-18        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Net change in net cash used in investing activities 7,327 (7,327)    
Restricted cash   14,900 $ 0 $ 6,650
General and Administrative Expense | Restatement Adjustment        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Reclassification of non-recoverable payroll   915    
Property Operating Expense | Restatement Adjustment        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Reclassification of non-recoverable payroll   $ (915)    
Restatement Adjustment | Accounting Standards Update 2016-18        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Net change in net cash used in investing activities $ (8,250)