Investments in Joint Ventures (Aggregate Balance Sheet And Statement Of Income Data For Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Investments in Joint Ventures [Abstract]
Total assets		$ 683,100		$ 695,200
Total third-party debt		510,500		510,700
Total equity		157,300		$ 158,400
Total revenues		32,400	$ 31,100
Net income		4,000	3,700
Equity in income (1)	[1]	$ 1,912	$ 1,829

[1] Equity in income excludes our ownership interest of fee income from various services provided by us to the Funds.