Description Of Business And Segment Reporting (Reconciliation To Net Income Attributable To Common Shareholders) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Segment operating income (loss)	$ (7,531)	$ (7,880)
Depreciation and amortization expense	(4,205)	(4,639)
General and administrative expense	(5,423)	(5,179)
Equity earnings of unconsolidated joint ventures	(25)	19
Gain (loss) on sale of assets	(1,125)
Other income (expense)	341	174
Income (loss) before income taxes	(13,626)	(11,804)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Segment operating income (loss)	(3,275)	(3,606)
Unallocated Corporate Expense [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization expense	(102)	(179)
General and administrative expense	(4,154)	(4,095)
Interest expense, net	$ (5,286)	$ (4,117)