Supplemental Disclosures for the Statement of Consolidated Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Supplemental Cash Flow Elements [Abstract]
Tenant improvements funded by tenants	$ 33,472	$ 2,961	$ 48,842
Accrued capital expenditures and deferred lease costs	28,173	24,379	24,817
Change in accrued dividends	(10,215)	(691)	(365)
Change in accrued share repurchases as part of an announced plan	0	0	(685)
Change in accrued deferred financing costs	(189)	44	0
Cash and cash equivalents	825	16,536	7,419	$ 7,331
Restricted cash and escrows	3,381	3,064	1,441	1,883
Total cash, cash equivalents, and restricted cash and escrows as presented in the accompanying consolidated statement of cash flows	$ 4,206	$ 19,600	$ 8,860	$ 9,214