Quarterly report pursuant to Section 13 or 15(d)

Discontinued Operations (Narrative) (Details)

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Discontinued Operations (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 30, 2014
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sqft
Dec. 31, 2013
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property
sqft
Discontinued Operations [Abstract]    
Number of properties sold 9 24
Area of property sold 1,694,563 3,000,000
Number of land parcels sold   3
Sales proceeds $ 235,322 $ 390,600