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Investments In Unconsolidated Entities (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Schedule of Equity Method Investments [Line Items]      
Equity in (earnings) loss of unconsolidated entities $ (4,059,000) $ (3,296,000) $ (2,911,000)
Impairments of investments in unconsolidated joint ventures 0 0 1,908,000
Capital contributions made to unconsolidated entities 16,456,000 4,603,000 22,890,000
Capital and earnings distributions received from unconsolidated entities $ 10,500,000 $ 11,600,000 $ 9,700,000