Debt - Unsecured Notes Payable - Additional Information (Details) - USD ($) $ in Thousands		Jun. 30, 2024	Apr. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt outstanding	[1],[2]	$ 1,707,658		$ 1,881,087
Letters of credit, outstanding amount		2,000		2,000
Letter of Credit
Debt Instrument [Line Items]
Total available credit			$ 60,000
Fund IV
Debt Instrument [Line Items]
Long-term debt outstanding		36,200		36,200
Mortgages | Fund Portfolio | Fund II
Debt Instrument [Line Items]
Long-term debt outstanding	[3]	137,485		137,485
Mortgages | Fund Portfolio | Fund IV
Debt Instrument [Line Items]
Long-term debt outstanding	[4]	109,484		115,925
Mortgages | Fund Portfolio | Fund V
Debt Instrument [Line Items]
Long-term debt outstanding		500,144		458,960
$400 Million Term Loan | Unsecured Debt
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 400,000
Subscription Line | Unsecured Debt | Fund Portfolio | Fund V
Debt Instrument [Line Items]
Long-term debt outstanding	[5]	$ 0		$ 80,600

[1] Includes $151.2 million and $151.4 million, respectively, of variable-rate debt that is subject to interest cap agreements as of the periods presented. The effective fixed rates ranged from 4.50% to 6.00%.

[2] Includes $1,188.3 million and $1,249.8 million, respectively, of variable-rate debt that has been fixed with interest rate swap agreements as of the periods presented. The effective fixed rates ranged from 1.14% to 4.69%.

[3] The Company has a total borrowing capacity of $198.0 million on the Fund II mortgage as of both June 30, 2024 and December 31, 2023.

[4] Includes the outstanding balance on the Fund IV secured bridge facility of $36.2 million as of both June 30, 2024 and December 31, 2023.

[5] Fund V paid off the subscription line and terminated the outstanding letters of credit during the six months ended June 30, 2024.