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v3.22.1

Debt - Summary of Consolidated Indebtedness (Parenthetical) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 1,826,271 | $ 1,819,738
Interest Rate Caps |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | 107,300 | 110,500
Total Debt - Variable Rate Debt Fixed with Interest Rate Swap Agreements |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | 798,200 | 860,400
Core Portfolio | Mortgages |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | 205,397 | 218,421
Core Portfolio | Interest Rate Swaps |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | 0 | 0
Fund Portfolio | Mortgages |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 386,653 | 388,410
Minimum | Core Portfolio | Variable Rate Debt | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 1.50% |
Minimum | Core Portfolio | Unsecured Notes Payable | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 1.55% |
Minimum | Core Portfolio | Unsecured Line of Credit [Member] | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 1.40% |
Maximum | Core Portfolio | Variable Rate Debt | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 1.70% |
Fund II | Fund Portfolio |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 256,212 | $ 255,978
Fund II | Fund Portfolio | Variable Rate Debt | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 2.75% |
Fund II | Fund Portfolio | Variable Rate Debt | LIBOR | Mortgages |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 2.75% | 2.75%
Fund II | Fund Portfolio | Variable Rate Debt | PRIME |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 2.00% |
Fund II | Fund Portfolio | Variable Rate Debt | PRIME | Mortgages |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 2.00% | 2.00%
Fund III | Fund Portfolio |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 35,970 | $ 34,728
Fund III | Fund Portfolio | Variable Rate Debt | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 3.10% |
Fund III | Maximum | Fund Portfolio | Variable Rate Debt | LIBOR | Mortgages |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 3.10% | 2.75%
Fund IV | Fund Portfolio | Mortgages |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 214,108 | $ 246,268
Fund IV | Fund Portfolio | Variable Rate Debt | Mortgages |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 212,988 | $ 221,832
Fund IV | Minimum | Fund Portfolio | Variable Rate Debt | Mortgages |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 1.75% |
Fund IV | Minimum | Fund Portfolio | Variable Rate Debt | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 1.75% |
Fund IV | Minimum | Fund Portfolio | Variable Rate Debt | LIBOR | Mortgages |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate |  | 1.60%
Fund IV | Maximum | Fund Portfolio | Variable Rate Debt | Mortgages |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 3.65% |
Fund IV | Maximum | Fund Portfolio | Variable Rate Debt | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 3.65% |
Fund IV | Maximum | Fund Portfolio | Variable Rate Debt | LIBOR | Mortgages |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate |  | 3.65%
Fund V | Fund Portfolio | Variable Rate Debt | Mortgages |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 58,583 | $ 58,878
Fund V | Fund Portfolio | Variable Rate Debt | LIBOR | Mortgages |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 1.85% |
Fund V | Minimum | Fund Portfolio | Variable Rate Debt | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 1.50% |
Fund V | Minimum | Fund Portfolio | Variable Rate Debt | LIBOR | Mortgages |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate |  | 1.85%
Fund V | Maximum | Fund Portfolio | Variable Rate Debt | LIBOR |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 2.20% |
Fund V | Maximum | Fund Portfolio | Variable Rate Debt | LIBOR | Mortgages |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 2.76% |

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