Earnings Per Share (Narrative) (Details) - $ / shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Series C Preferred Shares [Member]
Anitidlutive securities exluded from computation of earnings per share [Line Items]
Common shares upon conversion of convertible preferred shares	2,300	2,200	2,300	2,200
Preferred Stock, Dividend Rate, Percentage			5.75%	5.75%
Series E Preferred Shares [Member]
Anitidlutive securities exluded from computation of earnings per share [Line Items]
Common shares upon conversion of convertible preferred shares		1,700	1,700	1,700
Preferred Stock, Dividend Rate, Percentage			9.00%	9.00%
Share Options [Member]
Anitidlutive securities exluded from computation of earnings per share [Line Items]
Common shares upon conversion of convertible preferred shares	83	89	83	89
Performance Shares [Member] | January 1, 2020 Award Date
Anitidlutive securities exluded from computation of earnings per share [Line Items]
Common shares upon conversion of convertible preferred shares		56		56
Minimum [Member]
Anitidlutive securities exluded from computation of earnings per share [Line Items]
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit	$ 44.44	$ 44.44	$ 44.44	$ 44.44
Maximum [Member]
Anitidlutive securities exluded from computation of earnings per share [Line Items]
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit	$ 76.63	$ 76.63	$ 76.63	$ 76.63