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Intangible Lease Asset/Liability (Narrative) (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Intangible Lease Asset/Liability [Abstract]    
Unamortized intangible lease liabilities $ 23,187,000 $ 23,776,000
Unamortized intangible lease assets 600,000 $ 100,000
Accumulated amortization $ 40,700,000