Share-Based Compensation (Schedule of Share-Based Compensation Information) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Share Based Compensation [Abstract]
Expense relating to share/unit grants	$ 293,000	$ 1,092,000	$ 877,000	$ 2,021,000
Amounts capitalized	(12,000)	(46,000)	(54,000)	(95,000)
Total charged to operations	$ 281,000	$ 1,046,000	$ 823,000	$ 1,926,000
Unvested shares/units, December 31, 2021			492,000
Restricted share grants			7,000
Vested during period			(33,000)
Forfeitures/cancellations			(82,000)
Unvested shares/units, June 30, 2022	384,000		384,000
Unvested shares/unit, December 31, 2021, weighted average grant date fair value			$ 23.47
Restricted share grants, weighted average grant date fair value			26.31
Vested during period, weighted average grant date fair value			24.34
Forfeitures/cancellations, weighted average grant date fair value			28.29
Unvested shares/unit, March 31, 2022, weighted average grant date fair value	$ 22.42		$ 22.42