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Segment Reporting (Tables)
 3 Months Ended
Mar. 31, 2021
Segment Reporting [Abstract]  
Schedule of operating segments
   For the Three Months 
   Ended March 31, 
   2021   2020 
    (unaudited)    (unaudited) 
COMPLEX MACHINING          
Net Sales  $12,166,000   $12,064,000 
Gross Profit   1,619,000    2,168,000 
Income before benefit from income taxes   980,000    1,170,000 
Assets   51,703,000    48,732,000 
           
TURBINE ENGINE COMPONENTS          
Net Sales   1,546,000    1,383,000 
Gross Profit   178,000    13,000 
Loss before benefit from income taxes   (15,000)   (126,000)
Assets   3,582,000    4,569,000 
           
CORPORATE          
Net Sales   -    - 
Gross Profit   -    - 
Loss before benefit from income taxes   (1,117,000)   (1,400,000)
Assets   2,075,000    750,000 
           
CONSOLIDATED          
Net Sales   13,712,000    13,447,000 
Gross Profit   1,797,000    2,181,000 
Loss before benefit from income taxes   (152,000)   (356,000)
Benefit from Income Taxes   -    (1,414,000)
Net Income (loss)   (152,000)   1,058,000 
Assets  $57,360,000   $54,051,000