Fair Value Measurements - Schedule of Carrying Amount And Estimated Fair Value Of Financial Instruments (Details) - USD ($)
$ in Thousands |
Mar. 31, 2018 |
Dec. 31, 2017 |
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Loans receivable, net |
$ 118,306
|
$ 82,886
|
| Revolving Credit Facility |
154,491
|
111,997
|
| Convertible notes, net |
750,980
|
761,440
|
| Carrying Value |
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Loans receivable, net |
111,062
|
79,967
|
| Revolving Credit Facility |
154,500
|
112,000
|
| Convertible notes, net |
719,295
|
715,881
|
| Term Loan |
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Term Loan, net |
0
|
0
|
| Term Loan | Carrying Value |
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Term Loan, net |
0
|
0
|
| Senior Unsecured Notes |
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Notes payable, net |
290,883
|
299,049
|
| Senior Unsecured Notes | Carrying Value |
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Notes payable, net |
295,431
|
295,321
|
| Mortgages and Notes Payable |
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Notes payable, net |
2,684,410
|
2,657,599
|
| Mortgages and Notes Payable | Carrying Value |
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Notes payable, net |
$ 2,571,794
|
$ 2,516,478
|