Accounting Policies - Schedule of Inventory (Details) - USD ($) $ in Thousands  | 
Mar. 28, 2021  | 
Sep. 27, 2020  | 
|---|---|---|
| Accounting Policies [Abstract] | ||
| Raw Material | $ 4,855 | $ 5,506 | 
| Work in Process | 3,974 | 3,214 | 
| Finished Goods | 731 | 638 | 
| Gross Inventory | 9,560 | 9,358 | 
| Less: Inventory Reserves | (567) | (567) | 
| Net Inventory | $ 8,993 | $ 8,791 | 
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- References No definition available. 
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- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of valuation reserve for inventory. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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