Business Segments (Reconciliation Of Segment Operating Income Before Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	$ 6,088	$ 10,486	$ 10,782	$ 15,718
Depreciation and amortization expense	(3,828)	(3,526)	(7,635)	(7,268)
General and administrative expense	(6,006)	(5,274)	(12,197)	(9,602)
Equity earnings of unconsolidated joint ventures and entities	305	483	608	720
Gain on sale of assets		8,201	393	11,023
Other income (expense)	(46)	1	(104)	(89)
Income before income taxes	4,585	17,570	8,043	23,196
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	11,123	14,786	20,901	23,414
Corporate, Non-segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and amortization expense	(100)	(64)	(194)	(134)
General and administrative expense	(4,935)	(4,236)	(9,925)	(7,562)
Interest expense, net	$ (1,762)	$ (1,601)	$ (3,636)	$ (4,176)