CREDIT FACILITIES - Summary of Borrowings (Details) - USD ($) $ in Thousands		9 Months Ended
		Jun. 30, 2017	Sep. 30, 2016
Total debt, net		$ 16,064	$ 19,640
Long-term Debt, Gross		16,352	19,869
Unamortized Debt Issuance Expense		(288)	(229)
Less: current portion		(987)	(2,908)
Long-term debt		$ 15,077	$ 16,732
Term Loan A [Member]
Fixed/Variable Rate		Fixed Interest Rate
Maturity Date	[1]	Feb. 01, 2020
Interest Rate	[1]	0.00%	3.98%
Total debt, net	[1]	$ 0	$ 3,693
Term Loan B [Member]
Fixed/Variable Rate		Variable Interest Rate
Maturity Date		May 05, 2022
Interest Rate		3.80%	3.03%
Total debt, net		$ 5,928	$ 8,983
Albuquerque Mortgage Loan [Member]
Fixed/Variable Rate		Variable Interest Rate
Maturity Date	[1]	Feb. 01, 2018
Interest Rate	[1]	0.00%	3.55%
Total debt, net	[1]	$ 0	$ 2,200
Celmet Building Term Loan [Member]
Fixed/Variable Rate		Fixed Interest Rate
Maturity Date		Nov. 07, 2018
Interest Rate		4.72%	4.72%
Total debt, net		$ 834	$ 932
Albuquerque Industrial Revenue Bond [Member]
Fixed/Variable Rate		Fixed Interest Rate
Maturity Date	[1]	Mar. 01, 2019
Interest Rate	[1]	0.00%	5.63%
Total debt, net	[1]	$ 0	$ 100
Revolving Credit Facility [Member]
Fixed/Variable Rate		Variable Interest Rate
Maturity Date		May 05, 2022
Interest Rate		3.72%	3.28%
Total debt, net		$ 9,590	$ 3,961

[1] The Albuquerque Mortgage Loan and the Albuquerque Industrial Revenue Bond were repaid in connection with the sale-leaseback transaction described in Note 12—Capital Lease. The proceeds from the transaction were also used to pay down Term Loan A, which was subsequently paid off in due course.