Segment Reporting (Details) - Schedule of operating segments - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
COMPLEX MACHINING
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	$ 12,166,000	$ 12,064,000
Gross Profit	1,619,000	2,168,000
Income (Loss) before benefit from income taxes	980,000	1,170,000
Assets	51,703,000	48,732,000
TURBINE ENGINE COMPONENTS
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	1,546,000	1,383,000
Gross Profit	178,000	13,000
Income (Loss) before benefit from income taxes	(15,000)	(126,000)
Assets	3,582,000	4,569,000
CORPORATE
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales
Gross Profit
Income (Loss) before benefit from income taxes	(1,117,000)	(1,400,000)
Assets	2,075,000	750,000
CONSOLIDATED
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	13,712,000	13,447,000
Gross Profit	1,797,000	2,181,000
Income (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