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Details of Certain Financial Statement Components and Supplemental Disclosures of Cash Flow Information and Non-Cash Activities (Tables)
9 Months Ended
Sep. 26, 2020
Text Block [Abstract]  
Components of Accounts Receivable
   
September 26,
2020
   
December 31,
2019
 
Accounts receivable:
    
Accounts receivable-commercial products
  $—     $347,000 
Less: allowance for doubtful accounts
   —      (3,000
  
 
 
   
 
 
 
  $—     $344,000 
  
 
 
   
 
 
 
Components of Inventories
   
September 26,
2020

December 31,
2019
 
Inventories:
    
Raw materials
  $
 
—    $152,000 
Work In Process
   
 
68,000   111,000 
  
 
 
 
  
 
 
 
  $
 
68,000  $263,000 
  
 
 
 
  
 
 
 
Components of Property and Equipment
   
September 26,
2020
   
December 31,
2019
 
Property and Equipment:
    
Equipment
  $316,000   $11,911,000 
Leasehold improvements
   —      1,065,000 
Furniture and fixtures
   —      205,000 
  
 
 
   
 
 
 
   316,000    13,181,000 
Less: accumulated depreciation and amortization
   (316,000   (12,948,000
  
 
 
   
 
 
 
  $—     $233,000 
  
 
 
   
 
 
 
Components of Patents and Licenses
   
September 26,
2020
   
December 31,
2019
 
Patents and Licenses:
    
Patents pending
  $—     $—   
Patents issued
   278,000    1,712,000 
Less accumulated amortization
   (278,000   (1,071,000
  
 
 
   
 
 
 
Net patents issued
   —      641,000 
  
 
 
   
 
 
 
  $—     $641,000 
  
 
 
   
 
 
 
Components of Accrued Expenses and Other Long Term Liabilities
 
   
September 26,
2020
   
December 31,

2019
 
Accrued Expenses and Other Long Term Liabilities:
    
Salaries Payable
  $14,000   $23,000 
Compensated absences
   90,000    211,000 
Compensation related
   —      4,000 
Warranty reserve
   —      8,000 
Operating lease
   —      152,000 
Other
   30,000    54,000 
  
 
 
   
 
 
 
   134,000    452,000 
Less current portion
   (134,000   (440,000
  
 
 
   
 
 
 
Long term portion
  $—     $12,000 
  
 
 
   
 
 
 
Schedule of Warranty Reserve Activity
   
For the nine months ended,
 
   
September 26,
2020
   
September 28,
2019
 
Warranty Reserve Activity:
    
Beginning balance
  $8,000   $8,000 
Additions
   —      —   
Deductions
   8,000    —   
  
 
 
   
 
 
 
Ending balance
  $—     $8,000