Consolidated Statements of Cash Flows - Supplemental Information Supplemental Cash Flows Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Supplemental Cash Flow Elements [Abstract]
Interest paid, net of amounts capitalized	$ 70,087	$ 68,003	$ 62,641
Income taxes paid	38	155	343
Non-Cash Transactions:
Common stock dividends declared and accrued	48,525	47,350	44,681
Transfer from projects under development to operating properties	141,348	0	443,932
Tenant improvements recorded in deferred income	80,369	4,541	15,803
Transfer from investment in unconsolidated joint ventures to operating properties	0	37,777	0
Transfer from operating properties and related liabilities to assets and liabilities of real estate assets held for sale	$ 0	$ 0	$ 188,378