Business Segments (Reconciliation Of Segment Operating Income Before Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	$ 6,610	$ 3,120	$ 17,392	$ 18,840
Depreciation and amortization expense	(4,131)	(3,501)	(11,766)	(10,769)
General and administrative expense	(6,175)	(4,134)	(18,372)	(13,736)
Equity earnings of unconsolidated joint ventures and entities	200	195	808	915
Gain on sale of assets			393	11,023
Other expense	(12)	(577)	(115)	(667)
Income before income taxes	5,245	844	13,288	24,041
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	11,481	6,281	32,380	29,697
Corporate, Non-segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and amortization expense	(102)	(86)	(295)	(220)
General and administrative expense	(4,769)	(3,075)	(14,693)	(10,637)
Interest expense, net	$ (1,553)	$ (1,894)	$ (5,190)	$ (6,070)