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Lease Termination Fee (Details) - USD ($)
 1 Months Ended 9 Months Ended
Jul. 31, 2018
Sep. 30, 2017
Lease Termination Fee    
Lease termination fee $ 372,000  
Additional Rental Income From Write-Off of Unamortized Intangible Lease Liability And Unbilled Rent Receivable 804,000  
Write-off of the unamortized intangible lease liability 878,000  
Write-off of unbilled rent receivable $ 74,000 $ 362,000