INVENTORIES (Details) - USD ($) $ in Thousands	Jun. 26, 2020	Sep. 30, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 30,252	$ 25,393
Work-in-process	12,946	15,928
Finished goods	3,665	2,946
Total inventories	$ 46,863	$ 44,267

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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