Summary Of Significant Accounting Policies Consolidated Statement of Cash Flows - Supplemental Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Accounting Policies [Abstract]
Total interest costs incurred	$ 47,325	$ 48,999
Interest capitalized	(4,850)	(5,306)
Interest expense	42,475	43,693
Cash paid for interest, net of amounts capitalized	34,997	39,199
Cash paid (refunded) for income taxes	11	(5)
Shares issued under dividend reinvestment plan	396	420
DownREIT operating partnership units redeemed for common shares	$ 103	$ 366