CREDIT FACILITIES - Summary of Borrowings (Details) - USD ($) $ in Thousands		3 Months Ended
		Dec. 30, 2016	Sep. 30, 2016	Jan. 01, 2016
Long-term Debt, Gross		$ 12,223	$ 19,869
Unamortized Debt Issuance Expense		(220)		$ (229)
Total debt, net		12,003	19,640
Less: current portion		(1,578)	(2,908)
Long-term debt		$ 10,425	$ 16,732
Term Loan A [Member]
Fixed/Variable Rate		Fixed Interest Rate
Maturity Date	[1]	Feb. 01, 2020
Interest Rate	[1]	3.98%	3.98%
Total debt, net	[1]	$ 48	$ 3,693
Term Loan B [Member]
Fixed/Variable Rate		Variable Interest Rate
Maturity Date		Feb. 01, 2023
Interest Rate		3.87%	3.03%
Total debt, net		$ 8,633	$ 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		$ 899	$ 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		Jan. 18, 2018
Interest Rate		5.02%	3.28%
Total debt, net		$ 2,643	$ 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 14—Capital Lease. The proceeds from the transaction were also used to pay down Term Loan A.