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LEASES (Summary of Rental Income) (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2019
Aug. 31, 2018
Aug. 31, 2017
LEASES [Abstract]      
Minimum rental receipts $ 2,924 $ 2,750 $ 2,654
Deferred rent accruals 8 (26) (17)
Total straight line rent income 2,932 2,724 2,637
Contingent rental receipts 136 130 121
Common maintenance area income 186 155 141
Rental income $ 3,254 $ 3,009 $ 2,899