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SEGMENT AND GEOGRAPHIC INFORMATION - GEOGRAPHIC AREAS (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Geographic information    
Long-lived assets $ 7,878 $ 10,454
Total revenue (excluding interest income) 12,937 13,581
United States    
Geographic information    
Long-lived assets 3,765 5,187
Total revenue (excluding interest income) 8,444 10,226
Canada    
Geographic information    
Long-lived assets 4,113 5,267
Total revenue (excluding interest income) $ 4,493 $ 3,355