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Segment Reporting (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Net Sales $ 15,817,000 $ 17,084,000 $ 30,602,000 $ 33,237,000  
Gross Profit 2,311,000 2,919,000 4,702,000 5,621,000  
Gain on Change to Plan of Assets Held for Sale (163,000) 288,000  
Pre Tax Income (Loss) 185,000 (2,171,000) (1,281,000) (3,325,000)  
Provision for (Benefit from) Income Taxes (199,000) 2,000 (199,000)  
Net Income (Loss)   (1,972,000) (276,000) (3,126,000)  
Assets 63,402,000   63,402,000   $ 62,317,000
COMPLEX MACHINING [Member]          
Net Sales 9,705,000 10,473,000 20,332,000 20,364,000  
Gross Profit 1,469,000 939,000 3,492,000 3,840,000  
Pre Tax Income (Loss) 657,000 (1,378,000) 773,000 (293,000)  
Assets 44,077,000 44,222,000 44,077,000 44,222,000  
AEROSTRUCTURES & ELECTRONICS [Member]          
Net Sales 4,844,000 4,733,000 7,720,000 9,053,000  
Gross Profit 787,000 1,934,000 1,203,000 1,960,000  
Pre Tax Income (Loss) 417,000 348,000 (147,000) (931,000)  
Assets 13,276,000 19,458,000 13,276,000 19,458,000  
TURBINE ENGINE COMPONENTS [Member]          
Net Sales 1,268,000 1,878,000 2,550,000 3,820,000  
Gross Profit 55,000 46,000 7,000 (179,000)  
Pre Tax Income (Loss) (115,000) (669,000) (572,000) (1,496,000)  
Assets 5,761,000 11,541,000 5,761,000 11,541,000  
CORPORATE [Member]          
Net Sales  
Gross Profit  
Pre Tax Income (Loss) (2,337,000) (472,000) (2,898,000) (605,000)  
Assets 288,000 645,000 288,000 645,000  
CONSOLIDATED [Member]          
Net Sales 15,817,000 17,084,000 30,602,000 33,237,000  
Gross Profit 2,311,000 2,919,000 4,702,000 5,621,000  
Gain on Change to Plan of Assets Held for Sale 1,563,000 1,563,000  
Pre Tax Income (Loss) 185,000 (2,171,000) (1,281,000) (3,325,000)  
Provision for (Benefit from) Income Taxes (199,000) 2,000 (199,000)  
Net Income (Loss) 185,000 (1,972,000) (1,283,000) (3,126,000)  
Assets $ 63,402,000 $ 75,866,000 $ 63,402,000 $ 75,866,000