Variable Interest Entities - Summarized Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Net Investment in Real Estate	$ 3,778,148	$ 3,255,240
Operating Lease Right-of-Use Assets	24,927	25,205
Cash and Cash Equivalents	58,591	162,090
Deferred Rent Receivable	98,727	84,567
Prepaid Expenses and Other Assets, Net	156,047	134,983
Total Assets	4,179,098	3,791,938
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Loans Payable, Net	79,674	143,879
Accounts Payable, Accrued Expenses and Other Liabilities	153,096	120,292
Operating Lease Liabilities	22,592	22,826
Rents Received in Advance and Security Deposits	98,588	62,092
Total Liabilities and Equity/Partners' Capital	4,179,098	3,791,938
Other Real Estate Partnerships
ASSETS
Net Investment in Real Estate	277,984	245,396
Operating Lease Right-of-Use Assets	13,087	13,173
Cash and Cash Equivalents	9,126	4,090
Deferred Rent Receivable	10,984	9,219
Prepaid Expenses and Other Assets, Net	9,480	8,077
Total Assets	320,661	279,955
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Loans Payable, Net	0	6,292
Accounts Payable, Accrued Expenses and Other Liabilities	9,496	10,067
Operating Lease Liabilities	10,277	10,304
Rents Received in Advance and Security Deposits	7,470	4,130
Partners' Capital	293,418	249,162
Total Liabilities and Equity/Partners' Capital	$ 320,661	$ 279,955