Debt - Summary of Consolidated Indebtedness (Details) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Long-term debt, gross	[1],[2]	$ 1,814,472	$ 1,547,947
Net unamortized debt issuance costs		(11,713)	(10,893)
Unamortized premium		1,378	212
Secured Debt, Total		1,007,588	953,700
Unsecured notes payable, net		743,049	569,566
Total Indebtedness		1,804,137	1,537,266
Fund IV
Debt Instrument [Line Items]
Long-term debt, gross		36,200	36,200
Mortgages
Debt Instrument [Line Items]
Net unamortized debt issuance costs		(4,762)	(5,459)
Unamortized premium		1,378	212
Secured Debt, Total		1,007,588	953,700
Mortgages | Fund Portfolio | Fund II
Debt Instrument [Line Items]
Long-term debt, gross	[3]	137,485	137,485
Mortgages | Fund Portfolio | Fund III
Debt Instrument [Line Items]
Long-term debt, gross		33,000	33,000
Mortgages | Fund Portfolio | Fund IV
Debt Instrument [Line Items]
Long-term debt, gross	[4]	109,456	109,471
Mortgages | Fund Portfolio | Fund V
Debt Instrument [Line Items]
Long-term debt, gross		$ 499,730	498,779
Unsecured Debt
Debt Instrument [Line Items]
Basis spread on variable rate		1.40%
Long-term debt, gross		$ 75,000
Net unamortized debt issuance costs		(6,951)	(5,434)
Unsecured notes payable, net		743,049	569,566
Line of Credit
Debt Instrument [Line Items]
Unsecured notes payable, net	[5]	53,500	14,000
Fixed Rate | Mortgages | Core Portfolio
Debt Instrument [Line Items]
Long-term debt, gross		$ 231,301	180,212
Fixed Rate | Mortgages | Core Portfolio | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage		6.05%
Maturity Date		2035-04
Fixed Rate | Mortgages | Core Portfolio | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage		3.99%
Maturity Date		2026-11
Variable Rate Debt | Mortgages | SOFR | Fund II
Debt Instrument [Line Items]
Basis spread on variable rate	[3]	2.61%
Variable Rate Debt | Mortgages | Fund Portfolio | SOFR | Fund II
Debt Instrument [Line Items]
Maturity Date	[3]	2025-08
Variable Rate Debt | Mortgages | Fund Portfolio | SOFR | Fund IV | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	[4]	3.33%
Maturity Date	[4]	2028-06
Variable Rate Debt | Mortgages | Fund Portfolio | SOFR | Fund IV | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	[4]	2.15%
Maturity Date	[4]	2025-10
Variable Rate Debt | Mortgages | Fund Portfolio | SOFR | Fund V | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		3.10%
Maturity Date		2028-06
Variable Rate Debt | Mortgages | Fund Portfolio | SOFR | Fund V | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
Maturity Date		2025-09
Variable Rate Debt | Mortgages | Variable Rate | SOFR | Fund III
Debt Instrument [Line Items]
Basis spread on variable rate		3.75%
Maturity Date		2025-10
Variable Rate Unsecured Term Loans | Unsecured Debt | Core Portfolio
Debt Instrument [Line Items]
Long-term debt, gross	[5]	$ 650,000	475,000
Variable Rate Unsecured Term Loans | Unsecured Debt | Core Portfolio | Maximum
Debt Instrument [Line Items]
Maturity Date	[5]	2030-05
Variable Rate Unsecured Term Loans | Unsecured Debt | Core Portfolio | Minimum
Debt Instrument [Line Items]
Maturity Date	[5]	2028-04
Variable Rate Unsecured Term Loans | Unsecured Debt | Core Portfolio | SOFR | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	[5]	1.75%
Variable Rate Unsecured Term Loans | Unsecured Debt | Core Portfolio | SOFR | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	[5]	1.20%
Variable Rate Unsecured Term Loans | Unsecured Debt | Core Senior Notes Portfolio
Debt Instrument [Line Items]
Long-term debt, gross		$ 100,000	$ 100,000
Variable Rate Unsecured Term Loans | Unsecured Debt | Core Senior Notes Portfolio | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage		5.94%
Maturity Date		2029-08
Variable Rate Unsecured Term Loans | Unsecured Debt | Core Senior Notes Portfolio | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage		5.86%
Maturity Date		2027-08
Variable Rate Unsecured Term Loans | Line of Credit | Core Portfolio | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate	[5]	1.25%
Maturity Date	[5]	2028-04

[1] As of June 30, 2025 and December 31, 2024, the Company had $1,072.8 million and $852.0 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 1.98% to 4.50%.

[2] Includes $111.2 million at each June 30, 2025 and December 31, 2024, of variable-rate debt that is subject to interest cap agreements as of the periods presented. The effective fixed rates ranged from 5.00% to 6.00%.

[3] The Company has a total borrowing capacity of $198.0 million on the Fund II property mortgage loan as of both June 30, 2025 and December 31, 2024.

[4] Includes the outstanding balance on the Fund IV secured bridge facility of $36.2 million as of both June 30, 2025 and December 31, 2024.

[5] The Company has entered into various swap agreements to effectively fix its interest costs on a portion of its Revolver and term loans as of June 30, 2025 and December 31, 2024 (Note 8).