Description Of Business And Segment Reporting (Reconciliation To Net Income Attributable To Common Shareholders) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Operating income (loss)	$ (7,039)	$ (1,360)
Depreciation and amortization expense	(5,270)	(5,594)
General and administrative expense	(5,945)	(6,484)
Equity earnings of unconsolidated joint ventures	78	34
Other income (expense)	(218)	(20)
Income (loss) before income taxes	(8,968)	(3,198)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(2,467)	3,742
Unallocated Corporate Expense [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization expense	(192)	(61)
General and administrative expense	(4,380)	(5,041)
Interest expense, net	$ (1,789)	$ (1,852)