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Real Estate (Impairments) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Segment Reporting Information [Line Items]      
Real estate impairments $ 823us-gaap_ImpairmentOfRealEstate $ 4,106us-gaap_ImpairmentOfRealEstate $ 10,312us-gaap_ImpairmentOfRealEstate
Continuing operations      
Segment Reporting Information [Line Items]      
Real estate impairments 760us-gaap_ImpairmentOfRealEstate
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentContinuingOperationsMember		 3,565us-gaap_ImpairmentOfRealEstate
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentContinuingOperationsMember		 4,070us-gaap_ImpairmentOfRealEstate
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentContinuingOperationsMember
Discontinued operations      
Segment Reporting Information [Line Items]      
Real estate impairments $ 63us-gaap_ImpairmentOfRealEstate
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentDiscontinuedOperationsMember		 $ 541us-gaap_ImpairmentOfRealEstate
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentDiscontinuedOperationsMember		 $ 6,242us-gaap_ImpairmentOfRealEstate
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentDiscontinuedOperationsMember