Supplemental Disclosures for the Statement of Consolidated Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Supplemental Cash Flow Elements [Abstract]
Accrued capital expenditures and deferred lease costs	$ 15,557	$ 19,974
Change in accrued dividends	(26,048)	(25,683)
Change in accrued share repurchases as part of an announced plan	0	(685)
Accrued deferred financing costs	0	5
Cash and cash equivalents	7,211	10,689	$ 7,419	$ 7,331
Restricted cash and escrows	1,457	1,741	1,441	1,883
Total cash, cash equivalents, and restricted cash and escrows as presented in the accompanying consolidated statement of cash flows, beginning of period	$ 8,668	$ 12,430	$ 8,860	$ 9,214