Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Jan. 02, 2024	Jun. 15, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	May 04, 2023	Feb. 14, 2022
Class of Stock [Line Items]
Shares issued under dividend reinvestment plan (in shares)			19,847	19,502	19,758
Preferred shares, par value			$ 0.01	$ 0.01
Net cash proceeds of common stock			$ 131,895	$ 307,275	$ 172,981
Common shares of beneficial interest, shares authorized			200,000,000	100,000,000		200,000,000
At The Market Equity Program
Class of Stock [Line Items]
Shares issued			1,372,889	430,473
Aggregate offering price of common shares							$ 500,000
Net cash proceeds of common stock			$ 138,300	$ 47,400
Weighted average price per common share			$ 101.89	$ 111.49
Remaining capacity to issue			$ 312,100
At The Market Equity Program | Subsequent Event
Class of Stock [Line Items]
Shares settled	62,895
At The Market Equity Program | Commissions
Class of Stock [Line Items]
Commissions related to sales of common shares			1,400	$ 500
At The Market Equity Program | Other Offering Costs
Class of Stock [Line Items]
Commissions related to sales of common shares			$ 200	$ 100
Forward Sales Contracts
Class of Stock [Line Items]
Shares issued				2,203,655
Net cash proceeds of common stock				$ 259,400
5.0% Series C Cumulative Redeemable Preferred Shares
Class of Stock [Line Items]
Preferred shares, percentage			5.00%	5.00%	5.00%
Preferred shares, par value			$ 0.01	$ 0.01	$ 0.01
Preferred shares, liquidation preference per share			$ 25,000	$ 25,000	$ 25,000
Preferred Stock, Shares Outstanding			6,000	6,000
5.417% Series 1 Cumulative Convertible Preferred Shares
Class of Stock [Line Items]
Preferred shares, percentage			5.417%	5.417%	5.417%
Preferred shares, par value			$ 0.01	$ 0.01	$ 0.01
Preferred shares, liquidation preference per share			$ 25	$ 25	$ 25
Preferred Stock, Shares Outstanding			392,878	392,878	399,896
Conversion price per share			$ 104.69
Preferred shares converted		7,018
Common shares
Class of Stock [Line Items]
Common shares issued upon conversion		1,675
Depositary Shares | 5.0% Series C Cumulative Redeemable Preferred Shares
Class of Stock [Line Items]
Preferred shares, liquidation preference per share			$ 25.00	$ 25.00	$ 25.00
Preferred Shares | Depositary Shares | 5.0% Series C Cumulative Redeemable Preferred Shares
Class of Stock [Line Items]
Shares issued			6,000,000	6,000,000	6,000,000