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Segment Reporting (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Net Sales $ 11,043,000 $ 13,690,000 $ 35,200,000 $ 40,235,000  
Gross Profit (Loss) 1,360,000 1,557,000 4,951,000 5,531,000  
Pre Tax Loss (Loss) (1,360,000) (2,913,000) (4,583,000) (6,456,000)  
Provision for (Benefit from) Income Taxes 29,000 2,000 (170,000)  
Assets 63,012,000   63,012,000   $ 60,755,000
CONSOLIDATED [Member]          
Net Sales 11,043,000 13,690,000 35,200,000 40,235,000  
Gross Profit (Loss) 1,360,000 1,557,000 4,951,000 5,531,000  
Pre Tax Loss (Loss) (1,360,000) (2,913,000) (4,583,000) (6,456,000)  
Provision for (Benefit from) Income Taxes 29,000 2,000 (170,000)  
(Loss) Income from Discontinued Operations (1,770,000) 62,000 172,000 280,000  
Net Loss (3,130,000) (2,880,000) (4,413,000) (6,006,000)  
Assets Held for Sale 12,341,000 16,959,000 12,341,000 16,959,000  
Assets 63,012,000 76,265,000 63,012,000 76,265,000  
TURBINE ENGINE COMPONENTS [Member]          
Net Sales 1,043,000 1,649,000 3,593,000 5,469,000  
Gross Profit (Loss) (67,000) (67,000) (60,000) (246,000)  
Pre Tax Loss (Loss) (246,000) (613,000) (817,000) (2,110,000)  
Assets 5,661,000 11,220,000 5,661,000 11,220,000  
AEROSTRUCTURES & ELECTRONICS [Member]          
Net Sales 310,000 1,843,000 1,585,000 4,204,000  
Gross Profit (Loss) (6,000) 174,000 86,000 488,000  
Pre Tax Loss (Loss) (125,000) (602,000) (652,000) (1,750,000)  
Assets 1,320,000 2,763,000 1,320,000 2,763,000  
COMPLEX MACHINING [Member]          
Net Sales 9,690,000 10,198,000 30,022,000 30,562,000  
Gross Profit (Loss) 1,433,000 1,450,000 4,925,000 5,289,000  
Pre Tax Loss (Loss) 530,000 (90,000) 1,303,000 (383,000)  
Assets 43,418,000 44,362,000 43,418,000 44,362,000  
CORPORATE [Member]          
Net Sales  
Gross Profit (Loss)  
Pre Tax Loss (Loss) (1,519,000) (1,608,000) (4,417,000) (2,213,000)  
Assets $ 272,000 $ 961,000 $ 272,000 $ 961,000