Fair Value Measurements - Schedule of Carrying Amount and Estimated Fair Value Of Financial Instruments (Details) - USD ($) $ in Thousands |
Sep. 30, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Loans receivable, net | $ 34,465 | |
| Revolving credit facilities | 116,500 | |
| Term loans, net | $ 177,170 | |
| Senior Unsecured Notes, net | 1,926,752 | 1,484,066 |
| Mortgages and notes payable, net | 213,479 | 216,049 |
| Convertible Notes, net | 188,216 | 336,402 |
| Estimated Fair Value | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Loans receivable, net | 35,279 | |
| 2019 Credit Facility | 119,802 | |
| 2020 Term Loans, net | 177,938 | |
| Senior Unsecured Notes, net | 1,965,922 | 1,543,919 |
| Mortgages and notes payable, net | 227,384 | 235,253 |
| Convertible Notes, net | $ 193,995 | $ 356,602 |