Debt - Summary of Consolidated Indebtedness (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Long-term debt, gross				$ 1,805,414	$ 1,819,738
Net unamortized debt issuance costs				(12,697)	(7,946)
Unamortized Premium				343	446
Secured Debt, Total				928,639	1,140,293
Unsecured notes payable, net				696,134	559,040
Total Indebtedness				$ 1,793,060	1,812,238
Fund V
Debt Instrument [Line Items]
Interest rate, stated percentage				8.00%
Prime Rate
Debt Instrument [Line Items]
Basis spread on variable rate				1.00%
SOFR
Debt Instrument [Line Items]
Basis spread on variable rate		2.61%	2.56%
Fund Portfolio | Fund II
Debt Instrument [Line Items]
Long-term debt, gross				$ 83,655	255,978
Variable Rate
Debt Instrument [Line Items]
Long-term debt, gross	[1]			364,641	780,935
Mortgages
Debt Instrument [Line Items]
Net unamortized debt issuance costs				(5,076)	(3,988)
Unamortized Premium				343	446
Secured Debt, Total				928,639	1,140,293
Mortgages | Core Portfolio
Debt Instrument [Line Items]
Long-term debt, gross				193,838	218,421
Mortgages | Fund Portfolio
Debt Instrument [Line Items]
Long-term debt, gross				426,224	388,410
Mortgages | Fund Portfolio | Fund II
Debt Instrument [Line Items]
Long-term debt, gross				133,655	255,978
Mortgages | Fund Portfolio | Fund IV
Debt Instrument [Line Items]
Long-term debt, gross				146,230	246,268
Unsecured Term Loan
Debt Instrument [Line Items]
Net unamortized debt issuance costs				(7,621)	(3,958)
Unsecured notes payable, net				696,134	559,040
Line of Credit
Debt Instrument [Line Items]
Unsecured notes payable, net				168,287	112,905
Fixed Rate
Debt Instrument [Line Items]
Long-term debt, gross	[2]			1,440,773	1,038,803
Fixed Rate | Mortgages | Core Portfolio
Debt Instrument [Line Items]
Long-term debt, gross				$ 143,838	$ 145,464
Fixed Rate | Mortgages | Core Portfolio | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage				5.89%	5.89%
Maturity Date					2035-04
Fixed Rate | Mortgages | Core Portfolio | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage				3.88%	3.88%
Maturity Date					2024-02
Fixed Rate | Mortgages | Fund Portfolio | Fund IV
Debt Instrument [Line Items]
Interest rate, stated percentage				4.50%	4.50%
Maturity Date					2025-10
Long-term debt, gross				$ 1,120	$ 1,120
Fixed Rate | Mortgages | Fund Portfolio | Fund V
Debt Instrument [Line Items]
Interest rate, stated percentage				3.35%	3.35%
Maturity Date					2023-05
Long-term debt, gross				$ 31,801	$ 31,801
Variable Rate Debt | Core Portfolio
Debt Instrument [Line Items]
Basis spread on variable rate				4.54%
Variable Rate Debt | Fund Portfolio | LIBOR | Fund IV | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate				3.65%
Variable Rate Debt | Fund Portfolio | LIBOR | Fund IV | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate				2.25%
Variable Rate Debt | Fund Portfolio | LIBOR | Fund V | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate				1.85%
Variable Rate Debt | Fund Portfolio | SOFR | Fund II
Debt Instrument [Line Items]
Basis spread on variable rate				2.61%
Variable Rate Debt | Fund Portfolio | SOFR | Fund III
Debt Instrument [Line Items]
Basis spread on variable rate				3.35%
Variable Rate Debt | Fund Portfolio | SOFR | Fund V | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate				2.76%
Variable Rate Debt | Mortgages | SOFR | Fund II
Debt Instrument [Line Items]
Basis spread on variable rate				2.61%
Variable Rate Debt | Mortgages | Fund Portfolio | Fund III
Debt Instrument [Line Items]
Long-term debt, gross				$ 35,970	34,728
Variable Rate Debt | Mortgages | Fund Portfolio | Fund IV
Debt Instrument [Line Items]
Long-term debt, gross				145,110	221,832
Variable Rate Debt | Mortgages | Fund Portfolio | Fund V
Debt Instrument [Line Items]
Long-term debt, gross				$ 36,409	$ 58,878
Variable Rate Debt | Mortgages | Fund Portfolio | Prime Rate | Fund II
Debt Instrument [Line Items]
Basis spread on variable rate					2.00%
Variable Rate Debt | Mortgages | Fund Portfolio | LIBOR | Fund II
Debt Instrument [Line Items]
Basis spread on variable rate					2.75%
Maturity Date					2025-08
Variable Rate Debt | Mortgages | Fund Portfolio | LIBOR | Fund III | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate					2.75%
Variable Rate Debt | Mortgages | Fund Portfolio | LIBOR | Fund III | Minimum
Debt Instrument [Line Items]
Maturity Date					2023-07
Variable Rate Debt | Mortgages | Fund Portfolio | LIBOR | Fund IV | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate				3.65%	3.65%
Maturity Date					2026-06
Variable Rate Debt | Mortgages | Fund Portfolio | LIBOR | Fund IV | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate				2.25%	1.60%
Maturity Date					2023-04
Variable Rate Debt | Mortgages | Fund Portfolio | LIBOR | Fund V
Debt Instrument [Line Items]
Basis spread on variable rate				1.85%	1.85%
Variable Rate Debt | Mortgages | Fund Portfolio | LIBOR | Fund V | Maximum
Debt Instrument [Line Items]
Maturity Date					2026-11
Variable Rate Debt | Mortgages | Fund Portfolio | LIBOR | Fund V | Minimum
Debt Instrument [Line Items]
Maturity Date					2023-06
Variable Rate Debt | Mortgages | Fund Portfolio | SOFR | Fund V
Debt Instrument [Line Items]
Basis spread on variable rate				2.76%	2.76%
Variable Rate Debt | Mortgages | Variable Rate | SOFR | Fund III | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate				3.35%
Variable Rate - Swapped | Mortgages | Core Portfolio
Debt Instrument [Line Items]
Interest rate, stated percentage	[3]			4.54%
Maturity Date	[3]				2028-11
Long-term debt, gross	[3]			$ 50,000	$ 72,957
Variable Rate - Swapped | Mortgages | Core Portfolio | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	[3]				4.54%
Variable Rate - Swapped | Mortgages | Core Portfolio | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	[3]				3.41%
Variable Rate - Swapped | Mortgages | Fund Portfolio | Fund II
Debt Instrument [Line Items]
Interest rate, stated percentage	[3]			5.85%
Long-term debt, gross	[3]			$ 50,000	$ 0
Variable Rate - Swapped | Mortgages | Fund Portfolio | Fund IV
Debt Instrument [Line Items]
Long-term debt, gross	[3]			0	$ 23,316
Variable Rate - Swapped | Mortgages | Fund Portfolio | Fund IV | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	[3]				4.61%
Variable Rate - Swapped | Mortgages | Fund Portfolio | Fund IV | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	[3]				3.48%
Variable Rate - Swapped | Mortgages | Fund Portfolio | Fund V
Debt Instrument [Line Items]
Long-term debt, gross	[3]			$ 358,014	$ 297,731
Variable Rate - Swapped | Mortgages | Fund Portfolio | Fund V | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	[3]			5.11%	4.78%
Maturity Date	[3]				2025-04
Variable Rate - Swapped | Mortgages | Fund Portfolio | Fund V | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	[3]			2.93%	2.43%
Maturity Date	[3]				2023-01
Variable Rate - Swapped | Mortgages | Fund Portfolio | LIBOR | Fund II
Debt Instrument [Line Items]
Maturity Date	[3]			2025-08
Variable Rate Unsecured Term Loans - Swapped | Unsecured Term Loan | Core Portfolio
Debt Instrument [Line Items]
Long-term debt, gross	[3]			$ 650,000	$ 400,000
Variable Rate Unsecured Term Loans - Swapped | Unsecured Term Loan | Core Portfolio | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	[3]			5.11%	5.32%
Maturity Date	[3]			2029-07
Variable Rate Unsecured Term Loans - Swapped | Unsecured Term Loan | Core Portfolio | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	[3]			3.74%	3.65%
Maturity Date	[3]			2026-06
Variable Rate Unsecured Term Loans - Swapped | Line of Credit | Core Portfolio
Debt Instrument [Line Items]
Maturity Date					2025-06
Long-term debt, gross				$ 12,287	$ 46,491
Variable Rate Unsecured Term Loans - Swapped | Line of Credit | Core Portfolio | LIBOR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate					1.40%
Variable Rate Unsecured Term Loans - Swapped | Line of Credit | Core Portfolio | SOFR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate				1.50%
Unsecured Notes Payable | Unsecured Term Loan | Fund Portfolio | Fund II
Debt Instrument [Line Items]
Long-term debt, gross				$ 0	$ 40,000
Unsecured Notes Payable | Unsecured Term Loan | Fund Portfolio | LIBOR | Fund II
Debt Instrument [Line Items]
Basis spread on variable rate					2.25%
Term Loan Subscription Facility | Unsecured Term Loan | Fund Portfolio | Fund IV
Debt Instrument [Line Items]
Long-term debt, gross				0	$ 5,000
Term Loan Subscription Facility | Unsecured Term Loan | Fund Portfolio | SOFR | Fund IV
Debt Instrument [Line Items]
Basis spread on variable rate					2.01%
Subscription Line | Unsecured Term Loan | Fund V
Debt Instrument [Line Items]
Long-term debt, gross			$ 52,300
Subscription Line | Unsecured Term Loan | Fund Portfolio | Fund V
Debt Instrument [Line Items]
Long-term debt, gross				$ 51,210	$ 118,028
Subscription Line | Unsecured Term Loan | Fund Portfolio | LIBOR | Fund V
Debt Instrument [Line Items]
Basis spread on variable rate					1.90%
Maturity Date					2023-05
Subscription Line | Unsecured Term Loan | Fund Portfolio | SOFR | Fund V
Debt Instrument [Line Items]
Basis spread on variable rate				1.86%
Unsecured Line of Credit - Swapped | Line of Credit | Core Portfolio
Debt Instrument [Line Items]
Maturity Date	[3]				2025-06
Long-term debt, gross	[3]			$ 156,000	$ 66,414
Unsecured Line of Credit - Swapped | Line of Credit | Core Portfolio | Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	[3]			5.11%	5.32%
Unsecured Line of Credit - Swapped | Line of Credit | Core Portfolio | Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	[3]			3.74%	3.65%

[1] Includes $103.8 million and $110.5 million, respectively, of variable-rate debt that is subject to interest cap agreements as of the periods presented.

[2] Includes $1,264.0 million and $860.4 million, respectively, of variable-rate debt that has been fixed with interest rate swap agreements as of the periods presented. Fixed-rate debt at December 31, 2022 and 2021 includes $12.3 million and $0.0 million, respectively of Core swaps that may be used to hedge debt instruments of the Funds.

[3] At December 31, 2022, the stated rates ranged from 4.54% for Core variable-rate debt; SOFR + 2.61% for Fund II variable-rate debt; SOFR + 3.35% for Fund III variable-rate debt; LIBOR + 2.25% to LIBOR + 3.65% for Fund IV variable-rate debt; LIBOR + 1.85% to SOFR + 2.76% for Fund V variable-rate debt; 3.74%-5.11% for Core variable-rate unsecured term loans; and SOFR + 1.50% for Core variable-rate unsecured lines of credit.