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ACCRUED AND OTHER LIABILITIES - Tenant Leasing Reserve Escrow (Details) - USD ($)
Feb. 21, 2018
Sep. 30, 2018
Dec. 31, 2017
Sep. 30, 2017
ACCRUED AND OTHER LIABILITIES        
Master Tenant Funded Incurred Related To Leasing Reserve Escrow $ 2,250,000 $ 935,000    
Eligible costs funded from escrow account 1,600,000      
Cost incurred related to property acquisition 935,000      
Base rent payments 696,000      
Escrow balance 620,000 $ 8,477,796 $ 6,508,131 $ 7,027,196
Maximum rent payments $ 1,000,000