Notes and Bonds Payable - Future Maturities (Details) $ in Thousands	Dec. 31, 2021 USD ($) mortageNotePayable	Dec. 31, 2020 USD ($)
Long Term Debt Maturities [Line Items]
Number of outstanding mortgage notes | mortageNotePayable	8
Excluded debt issuance costs	$ 1,800
Future contractual maturities of the Company's notes and bonds payable
PRINCIPAL MATURITIES	1,813,664
Net Accretion/Amortization	(3,094)
Debt issuance costs	(9,245)
Notes and bonds payable	$ 1,801,325	$ 1,602,769
%	100.00%
2022
Future contractual maturities of the Company's notes and bonds payable
PRINCIPAL MATURITIES	$ 3,582
Net Accretion/Amortization	(130)
Debt issuance costs	(1,586)
Notes and bonds payable	$ 1,866
%	0.10%
2023
Future contractual maturities of the Company's notes and bonds payable
PRINCIPAL MATURITIES	$ 229,910
Net Accretion/Amortization	(148)
Debt issuance costs	(1,605)
Notes and bonds payable	$ 228,157
%	12.70%
2024
Future contractual maturities of the Company's notes and bonds payable
PRINCIPAL MATURITIES	$ 226,448
Net Accretion/Amortization	(266)
Debt issuance costs	(1,441)
Notes and bonds payable	$ 224,741
%	12.40%
2025
Future contractual maturities of the Company's notes and bonds payable
PRINCIPAL MATURITIES	$ 267,415
Net Accretion/Amortization	(434)
Debt issuance costs	(1,141)
Notes and bonds payable	$ 265,840
%	14.80%
2026
Future contractual maturities of the Company's notes and bonds payable
PRINCIPAL MATURITIES	$ 174,879
Net Accretion/Amortization	(469)
Debt issuance costs	(975)
Notes and bonds payable	$ 173,435
%	9.60%
2027 and thereafter
Future contractual maturities of the Company's notes and bonds payable
PRINCIPAL MATURITIES	$ 911,430
Net Accretion/Amortization	(1,647)
Debt issuance costs	(2,497)
Notes and bonds payable	$ 907,286
%	50.40%