Investments in Joint Ventures (Aggregate Balance Sheet And Statement Of Income Data For Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Investments in Joint Ventures [Abstract]
Total assets		$ 698,900		$ 698,900		$ 695,200
Total third-party debt		514,100		514,100		510,700
Total equity		156,500		156,500		$ 158,400
Total revenues		33,300	$ 32,500	98,500	$ 95,300
Net income		4,400	4,000	12,300	11,600
Equity in income (1)	[1]	$ 2,133	$ 1,943	$ 5,954	$ 5,644

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