Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details Narrative)

v3.21.4
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Oct. 03, 2021
Sep. 27, 2020
Sep. 29, 2019
Sep. 27, 2021
Jan. 11, 2021
Sep. 30, 2019
Sep. 27, 2019
Product Information [Line Items]              
Cash and cash equivalents $ 3,900 $ 4,700          
Federal deposit insurance amount 500            
Allowance for doubtful accounts 5            
Bad debt expenses associated with uncollectable accounts 0 1          
Inventory 7,583 8,791          
Net inventory decrease in support of deliveries 1,208 1,744          
Warranty reserve 78 83         $ 46
Right-of-use asset 3,599 [1] 1,416       $ 1,800  
Lease liability 3,661 [2]         1,900  
Revenue recognized over time 479 451          
Revenue 1 3          
Contract cost with customer 0 0          
Customer advance deposits 0 1          
Impairment of long-lived assets 0            
Deferred tax assets net 1,300            
Deferred tax assets gross 2,096 2,190          
Valuation allowance $ 808 $ 963          
Deferred tax assets, valuation allowances, description Due to historical losses, our valuation allowance reserve was set at 100% of the deferred tax asset for the years 2014 through 2018 for a net carrying value of zero.            
Deferred tax assets, tax expenses benefits $ 40            
Number of stock option were included as dilutive 8,323,809 8,589,919          
Undistributed earnings   $ 600 $ 700        
Unvested Restricted Stock [Member]              
Product Information [Line Items]              
Number of stock option were included as dilutive 99,000 182,000          
Restricted Unvested Shares [Member]              
Product Information [Line Items]              
Number of stock option were included as dilutive 240,000 300,000          
Number of stock units were incremental dilutive shares 82,788 125,347          
Warrants [Member]              
Product Information [Line Items]              
Number of stock option were included as dilutive     4,125,200        
Warrant [Member]              
Product Information [Line Items]              
Declared Dividends $ 0 $ 0          
Accounting Standards Update 2016-02 [Member]              
Product Information [Line Items]              
Right-of-use asset 3,600   $ 1,900 $ 1,400 $ 3,700 1,800  
Lease liability $ 3,700     $ 1,500 $ 3,700 $ 1,900 $ 1,800
Minimum [Member]              
Product Information [Line Items]              
Property and equipment, estimated useful lives 3            
Maximum [Member]              
Product Information [Line Items]              
Property and equipment, estimated useful lives 7            
Obsolete And Excess Inventories [Member]              
Product Information [Line Items]              
Inventory $ 69            
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | U.S. Government Agencies [Member]              
Product Information [Line Items]              
Concentration risk percentage 28.00% 50.00%          
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Major U.S Defense Contractor One [Member]              
Product Information [Line Items]              
Concentration risk percentage 27.00% 19.00%          
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Major U.S Defense Contractor Two [Member]              
Product Information [Line Items]              
Concentration risk percentage 11.00% 6.00%          
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Major U.S Defense Contractor Three [Member]              
Product Information [Line Items]              
Concentration risk percentage 5.00% 5.00%          
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Major U.S Defense Contractor Four [Member]              
Product Information [Line Items]              
Concentration risk percentage 5.00%            
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Major Commercial Customer One [Member]              
Product Information [Line Items]              
Concentration risk percentage 10.00% 9.00%          
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | All Other Customers [Member]              
Product Information [Line Items]              
Concentration risk percentage 14.00% 11.00%          
Accounts Receivable [Member] | Customer Concentration Risk [Member] | U.S. Government Agencies [Member]              
Product Information [Line Items]              
Concentration risk percentage 34.00% 29.00%          
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Major U.S Defense Contractor One [Member]              
Product Information [Line Items]              
Concentration risk percentage 13.00% 39.00%          
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Major U.S Defense Contractor Two [Member]              
Product Information [Line Items]              
Concentration risk percentage 10.00% 8.00%          
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Major U.S Defense Contractor Three [Member]              
Product Information [Line Items]              
Concentration risk percentage 7.00% 7.00%          
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Six Customers [Member]              
Product Information [Line Items]              
Concentration risk percentage 87.00%            
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Commercial Customer [Member]              
Product Information [Line Items]              
Concentration risk percentage 16.00% 6.00%          
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Foreign Military Customer [Member]              
Product Information [Line Items]              
Concentration risk percentage 7.00%            
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Five Customers [Member]              
Product Information [Line Items]              
Concentration risk percentage   89.00%          
[1] Short-term and Long-term portion of Operating Lease Liability is $528 thousand and $3,133 thousand, respectively.
[2] Includes $62 thousand of unamortized deferred rent.