Quarterly report pursuant to Section 13 or 15(d)

Commitments And Contingencies (Tax Abatement Agreements) (Narrative) (Details)

v3.7.0.1
Commitments And Contingencies (Tax Abatement Agreements) (Narrative) (Details) - USD ($)
 3 Months Ended 16 Months Ended 60 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Apr. 30, 2017
Apr. 30, 2022
Harborside Plaza 4-A [Member]        
Commitments And Contingencies [Line Items]        
Project period 20 years      
Percentage of PILOT on project costs 2.00%      
Total project costs $ 49,500,000      
Payments in lieu of property taxes (PILOT) $ 349,000 $ 247,000    
Harborside Plaza 5 [Member]        
Commitments And Contingencies [Line Items]        
Project period 20 years      
Percentage of PILOT on project costs 2.00%      
Total project costs $ 170,900,000      
Payments in lieu of property taxes (PILOT) $ 1,300,000 $ 854,000    
Port Imperial South 4/5 Garage [Member]        
Commitments And Contingencies [Line Items]        
Project period 5 years      
Port Imperial South 4/5 Garage [Member] | Tax Year 1 [Member]        
Commitments And Contingencies [Line Items]        
Annual percentage of cost for phase in 0.00%      
Port Imperial South 4/5 Garage [Member] | Tax Year 2 [Member]        
Commitments And Contingencies [Line Items]        
Annual percentage of cost for phase in 80.00%      
Port Imperial South 4/5 Garage [Member] | Tax Year 3 [Member]        
Commitments And Contingencies [Line Items]        
Annual percentage of cost for phase in 80.00%      
Port Imperial South 4/5 Garage [Member] | Tax Year 4 [Member]        
Commitments And Contingencies [Line Items]        
Annual percentage of cost for phase in 80.00%      
Port Imperial South 4/5 Garage [Member] | Tax Year 5 [Member]        
Commitments And Contingencies [Line Items]        
Annual percentage of cost for phase in 80.00%      
Port Imperial South 1/3 Garage [Member]        
Commitments And Contingencies [Line Items]        
Project period 5 years      
Percentage of taxes paid based on the land value 100.00%      
Port Imperial South 1/3 Garage [Member] | Tax Year 1 [Member]        
Commitments And Contingencies [Line Items]        
Annual percentage of cost for phase in 0.00%      
Port Imperial South 1/3 Garage [Member] | Tax Year 2 [Member]        
Commitments And Contingencies [Line Items]        
Annual percentage of cost for phase in 95.00%      
Port Imperial South 1/3 Garage [Member] | Tax Year 3 [Member]        
Commitments And Contingencies [Line Items]        
Annual percentage of cost for phase in 95.00%      
Port Imperial South 1/3 Garage [Member] | Tax Year 4 [Member]        
Commitments And Contingencies [Line Items]        
Annual percentage of cost for phase in 95.00%      
Port Imperial South 1/3 Garage [Member] | Tax Year 5 [Member]        
Commitments And Contingencies [Line Items]        
Annual percentage of cost for phase in 95.00%      
Port Imperial Hotel Development [Member]        
Commitments And Contingencies [Line Items]        
Project period 15 years      
Percentage of PILOT on project costs 2.00%      
Port Imperial South 11 Development [Member]        
Commitments And Contingencies [Line Items]        
Project period 15 years      
Percentage of PILOT on gross revenues 10.00%      
111 River Realty [Member]        
Commitments And Contingencies [Line Items]        
Payments in lieu of property taxes (PILOT) $ 307,000      
111 River Realty [Member] | Subsequent Event [Member]        
Commitments And Contingencies [Line Items]        
Annual Payments in lieu of property taxes (PILOT)     $ 1,227,708  
111 River Realty [Member] | Scenario, Forecast [Member]        
Commitments And Contingencies [Line Items]        
Annual Payments in lieu of property taxes (PILOT)       $ 1,406,064