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           Accounting Policies (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        
           Sep. 29, 2013 
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           Sep. 30, 2012 
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|---|---|---|
| Accounting Policies [Abstract] | ||
| Raw Materials | $ 6,856 | $ 5,749 | 
| Work in Process | 1,901 | 1,890 | 
| Finished Goods | 115 | 599 | 
| Gross Inventory | 8,872 | 8,238 | 
| Less: | ||
| Unliquidated Progress Payments | (62) | (62) | 
| Inventory Reserves | (1,231) | (1,082) | 
| Net Inventory | $ 7,579 | $ 7,094 | 
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- Details 
          
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- Definition 
          Unbilled amounts (net of unliquidated progress payments) of government contract receivables. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
          
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| X | ||||||||||
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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://www.xbrl.org/2003/role/presentationRef 
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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://www.xbrl.org/2003/role/presentationRef 
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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://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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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://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of valuation reserve for inventory. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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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://www.xbrl.org/2003/role/presentationRef 
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