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Investments In Unconsolidated Entities (Narrative) (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Schedule of Equity Method Investments [Line Items]        
Equity in (earnings) loss of unconsolidated entities $ (1,556,000) $ (1,193,000) $ (3,552,000) $ (2,302,000)
Capital contributions made to unconsolidated entities     858,000 3,184,000
Total dividends and distribution of earnings from unconsolidated entities     $ 8,500,000 $ 4,300,000