Debt - Summary of Components of Interest Expense Related to Borrowings (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Non-cash interest expense:    
Amortization of deferred financing costs $ 2,979 $ 2,401
Amortization of debt discount, net 4,562 3,061
Total interest expense 51,065 46,623
Revolving Credit Facility    
Schedule Of Interest Expenses [Line Items]    
Interest expense 1,352 1,232
Non-cash interest expense:    
Facility fees 500 600
Term Loan    
Schedule Of Interest Expenses [Line Items]    
Interest expense 0 2,246
Senior Unsecured Notes    
Schedule Of Interest Expenses [Line Items]    
Interest expense 3,338 3,338
Mortgages and Notes Payable    
Schedule Of Interest Expenses [Line Items]    
Interest expense 32,707 28,218
Convertible Notes    
Schedule Of Interest Expenses [Line Items]    
Interest expense $ 6,127 $ 6,127