Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

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Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Tenant Receivables $ 1,339   $ 704  
Escrow Deposit 2,080   1,638  
Deferred Costs and Other Assets 7,200   3,993  
Deferred Rent Receivables, Net 6,396   3,842  
Security Deposit Liability 5,052   2,128  
Receivables Earned But Not Paid Relating To Tenant Rent 209   125  
Receivables To Be Collected To Pay Specific Tenant Expenses 1,084   579  
Other Assets 2,283   459  
Other Deferred Costs, Net 804   151  
Capitalized Costs, Acquisitions Of Property 200      
Prepaid Expense 47      
Lease Deposit Liability 843   508  
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 6,187 [1] $ 14,325 [1] 7,114 $ 20,612
Other Assets, Miscellaneous, Current 46      
Accumulated Capitalized Interest Costs     316  
Prepaid Expense and Other Assets     143  
Tenant Improvements Expenditure Incurred But Not Yet Paid 1,647 $ 74    
Construction in Progress [Member]        
Other Assets 2,036      
Tenant Improvements Expenditure Incurred But Not Yet Paid 1,599      
Plano Lease [Member]        
Security Deposit Liability $ 4,209   $ 1,620  
[1] Represents the total of the amounts at the end of the periods presented on the Consolidated Statements of Cash Flows as required by ASU 2016-18. The cash and cash equivalents and restricted cash balance as of December 31, 2017 and December 31, 2016 (the beginning of the periods presented) was $7,114 and $20,612, respectively.