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CREDIT FACILITIES - Long-term Debt Maturities (Details) - USD ($)
$ in Thousands
9 Months Ended
Jun. 30, 2017
Sep. 30, 2016
Debt Instrument [Line Items]    
2017 $ 987  
2018 [1] 1,561  
2019 857  
2020 857  
2022 and thereafter (2) 12,090  
Total debt, net $ 16,352 $ 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 May 05, 2022  
[1] Includes Revolver balance of $9.6 million at June 30, 2017.