Debt - Additional Information - Debt Extinguishment (Details) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2018
USD ($)
loan
|
Sep. 30, 2018
USD ($)
|
Jun. 30, 2018
USD ($)
|
Mar. 31, 2018
USD ($)
|
Dec. 31, 2017
USD ($)
|
Sep. 30, 2017
USD ($)
|
Jun. 30, 2017
USD ($)
|
Mar. 31, 2017
USD ($)
|
Dec. 31, 2018
USD ($)
Property
loan
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
|
| Debt Instrument [Line Items] | |||||||||||
| Gain (loss) on debt extinguishment | $ 0 | $ 0 | $ 5,509 | $ 21,583 | $ (1,190) | $ 1,792 | $ 7 | $ (30) | $ 27,092 | $ 579 | $ 1,605 |
| Mortgages and Notes Payable | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Amount of extinguishment of debt | $ 202,100 | ||||||||||
| Weighted average interest rate | 5.47% | 5.47% | |||||||||
| Gain (loss) on debt extinguishment | $ 26,700 | (1,600) | |||||||||
| Mortgages and Notes Payable | Subsidiaries | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Amount of extinguishment of debt | $ 238,500 | ||||||||||
| Weighted average interest rate | 5.46% | 5.46% | |||||||||
| CMBS Loans | CMBS | |||||||||||
| Debt Instrument [Line Items] | |||||||||||
| Amount of extinguishment of debt | $ 56,200 | ||||||||||
| Number of loans paid off | loan | 6 | 6 | |||||||||
| Number properties, underperforming | Property | 6 | ||||||||||