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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Rent Revenues (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2015
RENT REVENUES      
Minimum rents $ 9,735 $ 9,196 $ 9,608
Overage and percentage rents 936 1,211 $ 1,030
Fiscal Year      
2018 7,845    
2019 6,100    
2020 4,961    
2021 3,973    
2022 2,032    
Thereafter 5,293    
Total 30,204    
Cost and accumulated depreciation for real estate properties      
Real estate properties 66,005 62,929  
Accumulated depreciation (42,169) (40,777)  
Real estate properties, Net $ 23,836 $ 22,152  
Minimum      
RENT REVENUES      
Lease term 3 years    
Maximum      
RENT REVENUES      
Lease term 10 years