Investments In Unconsolidated Entities (Summary Schedule Of Joint Ventures) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Investments in joint ventures with debt non-recourse to Company	$ 33,436	$ 23,236
Investments in other active joint ventures	18,011	18,031
Total investments in unconsolidated entities	51,447	41,267
Total joint venture debt	4,605	16,369
Company proportionate share of joint venture debt:
Joint venture debt with limited recourse guaranties	0	226
Joint venture debt non-recourse to Company	1,349	6,744
Company's total proportionate share of joint venture debt	$ 1,349	$ 6,970