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Property and Equipment (Tables)
 3 Months Ended
Mar. 31, 2021
Property, Plant and Equipment [Abstract]  
Schedule of property and equipment
   March 31,   December 31,    
   2021   2020    
   (unaudited)        
Land  $300,000   $300,000    
Buildings and Improvements   1,720,000    1,683,000   31.50 years
Machinery and Equipment   21,838,000    21,738,000   5 - 8 years
Finance Lease Machinery and Equipment   78,000    78,000   5 - 8 years
Tools and Instruments   12,246,000    12,116,000   1.50 - 7 years
Automotive Equipment   148,000    148,000   5 years
Furniture and Fixtures   290,000    290,000   5 - 8 years
Leasehold Improvements   861,000    855,000   Term of Lease
Computers and Software   436,000    436,000   4 - 6 years
Total Property and Equipment   37,917,000    37,644,000    
Less: Accumulated Depreciation   (28,776,000)   (28,063,000)   
Property and Equipment, net  $9,141,000   $9,581,000