CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Distributions in Excess of Accumulated Earnings	Total Common Shareholders' Equity	Noncontrolling Interests
Balance at Dec. 31, 2020	$ 2,050,204	$ 86	$ 1,683,165	$ (74,891)	$ (167,321)	$ 1,441,039	$ 609,165
Balance (in Shares) at Dec. 31, 2020		86,269
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership			294			294	(294)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares)		19
Dividends/distributions declared	(13,993)				(12,945)	(12,945)	(1,048)
Employee and trustee stock compensation, net	4,511		462			462	4,049
Employee and trustee stock compensation, net (in Shares)		14
Noncontrolling interest distributions	(5,676)						(5,676)
Noncontrolling interest contributions	11,241						11,241
Comprehensive income	39,521			32,929	4,817	37,746	1,775
Reallocation of noncontrolling interests			(369)			(369)	369
Balance at Mar. 31, 2021	2,085,808	$ 86	1,683,552	(41,962)	(175,449)	1,466,227	619,581
Balance (in Shares) at Mar. 31, 2021		86,302
Balance at Dec. 31, 2020	2,050,204	$ 86	1,683,165	(74,891)	(167,321)	1,441,039	609,165
Balance (in Shares) at Dec. 31, 2020		86,269
Balance at Dec. 31, 2021	$ 2,149,935	$ 89	1,754,383	(36,214)	(196,645)	1,521,613	628,322
Balance (in Shares) at Dec. 31, 2021	89,303,545	89,304
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership			572			572	(572)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares)		36
Issuance of Common Shares	$ 111,516	$ 5	111,511			111,516
Issuance of Common Shares (in Shares)		5,151
Dividends/distributions declared	(18,294)				(17,011)	(17,011)	(1,283)
Employee and trustee stock compensation, net	3,820	$ 1	430			431	3,389
Employee and trustee stock compensation, net (in Shares)		17
Noncontrolling interest distributions	(22,780)						(22,780)
Noncontrolling interest contributions	99,129						99,129
Comprehensive income	84,880			30,490	16,838	47,328	37,552
Reallocation of noncontrolling interests			(2,836)			(2,836)	2,836
Balance at Mar. 31, 2022	$ 2,408,206	$ 95	$ 1,864,060	$ (5,724)	$ (196,818)	$ 1,661,613	$ 746,593
Balance (in Shares) at Mar. 31, 2022	94,507,864	94,508