Quarterly report pursuant to Section 13 or 15(d)

Commitments And Contingencies (Ground Lease Agreements) (Narrative) (Details)

v3.19.1
Commitments And Contingencies (Ground Lease Agreements) (Narrative) (Details)
3 Months Ended
Mar. 31, 2019
USD ($)
item
Mar. 31, 2018
USD ($)
Lessee, Lease, Description [Line Items]    
Ground lease expense incurred $ 629,651 $ 550,000
Operating lease $ 22,500,000  
Number of ground leases | item 5  
Minimum [Member]    
Lessee, Lease, Description [Line Items]    
Term of lease contract 6 years 3 months  
Borrowing rate 5.637%  
Maximum [Member]    
Lessee, Lease, Description [Line Items]    
Term of lease contract 82 years 6 months 29 days  
Borrowing rate 7.618%