Description Of Business And Segment Reporting (Reconciliation To Net Income Attributable To Common Shareholders) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Operating income (loss)	$ 5,817	$ 8,614	$ 4,515	$ 14,306
Depreciation and amortization expense	(5,572)	(5,626)	(11,166)	(10,877)
General and administrative expense	(6,034)	(7,165)	(12,518)	(14,761)
Equity earnings of unconsolidated joint ventures	327	331	361	588
Other income (expense)	71	(61)	50	(143)
Income (loss) before income taxes	4,011	7,094	872	11,367
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	10,614	14,448	14,414	26,413
Unallocated Corporate Expense [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization expense	(127)	(104)	(188)	(221)
General and administrative expense	(4,670)	(5,730)	(9,710)	(11,886)
Interest expense, net	$ (2,204)	$ (1,790)	$ (4,055)	$ (3,384)