Recent Transactions (Schedule Of Purchase Price Allocation) (Details)
$ in Thousands
 6 Months Ended
Jun. 30, 2016
USD ($)
Above Market, In-Place And Below Market Leases [Member]  
Business Acquisition [Line Items]  
Amortization period 6 years 3 months 18 days
11 Martine Avenue [Member]  
Business Acquisition [Line Items]  
Land $ 2,460
Buildings and improvements 8,290
Net assets recorded upon acquisition/consolidation 10,750
320, 321 University Avenue [Member]  
Business Acquisition [Line Items]  
Land 7,305
Buildings and improvements 15,695
Net assets recorded upon acquisition/consolidation 23,000
101 Wood Avenue South [Member]  
Business Acquisition [Line Items]  
Land 8,509
Buildings and improvements 72,738
Above market leases 58 [1]
In-place lease values 6,743 [1]
Less: Below market lease values (5,748) [1]
Sub Total 88,048
Net assets recorded upon acquisition/consolidation $ 82,300
[1] Above market, in-place and below market leases will be amortized over a weighted-average term of 6.3 years.