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Investments In Unconsolidated Entities (Summary Schedule Of Joint Ventures) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Equity Method Investments and Joint Ventures [Abstract]    
Investments in joint ventures with limited recourse guaranties $ 0 $ 122
Investments in joint ventures with debt non-recourse to Company 11,453 11,486
Investments in other active joint ventures 24,535 34,705
Total investments in unconsolidated entities 35,988 46,313
Total joint venture debt 11,107 15,467
Company proportionate share of joint venture debt:    
Joint venture debt with limited recourse guaranties 1,202 1,444
Joint venture debt non-recourse to Company 2,009 3,696
Company's total proportionate share of joint venture debt $ 3,211 $ 5,140