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CREDIT FACILITIES - Long-term Debt Maturities (Details) - USD ($)
$ in Thousands
6 Months Ended
Mar. 31, 2017
Sep. 30, 2016
Debt Instrument [Line Items]    
2017 $ 1,530  
2018 [1] 2,137  
2019 1,400  
2020 1,400  
2022 and thereafter (2) 8,224  
Total debt, net $ 14,691 $ 19,869
Celmet Term Loan [Member]    
Debt Instrument [Line Items]    
Maturity date Nov. 07, 2018  
Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Maturity date Jan. 18, 2018  
[1] Includes Revolver balance of $5.5 million at March 31, 2017.