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MARKET SECTORS AND MAJOR CUSTOMERS - Summary of Sales by Sector (Details) - Sales Revenue
12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Concentration Risk [Line Items]    
Percentage of sales by sector 100.00% 100.00%
Aerospace and Defense    
Concentration Risk [Line Items]    
Percentage of sales by sector 52.00% 40.00%
Medical    
Concentration Risk [Line Items]    
Percentage of sales by sector 28.00% 42.00%
Industrial    
Concentration Risk [Line Items]    
Percentage of sales by sector 18.00% 16.00%
Other    
Concentration Risk [Line Items]    
Percentage of sales by sector 2.00% 2.00%