Segment Reporting (Details) - Schedule of operating segments - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
COMPLEX MACHINING
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	$ 13,043,000	$ 12,423,000	$ 38,992,000	$ 31,795,000
Gross Profit (loss)	2,022,000	1,735,000	5,966,000	4,584,000
Income (Loss) before benefit from income taxes	1,420,000	912,000	3,973,000	2,072,000
Assets	49,275,000	52,963,000	49,275,000	52,963,000
TURBINE ENGINE COMPONENTS
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	1,311,000	1,239,000	4,527,000	3,808,000
Gross Profit (loss)	(8,000)	(79,000)	448,000	(133,000)
Income (Loss) before benefit from income taxes	(119,000)	(251,000)	(20,000)	(594,000)
Assets	3,443,000	3,941,000	3,443,000	3,941,000
CORPORATE
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales
Gross Profit (loss)
Income (Loss) before benefit from income taxes	(1,367,000)	(1,138,000)	(3,932,000)	(3,895,000)
Assets	803,000	1,860,000	803,000	1,860,000
CONSOLIDATED
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	14,354,000	13,662,000	43,519,000	35,603,000
Gross Profit (loss)	2,014,000	1,656,000	6,414,000	4,451,000
Income (Loss) before benefit from income taxes	(66,000)	(477,000)	21,000	(2,417,000)
Benefit from Income Taxes				(1,414,000)
Net Income (loss)	(66,000)	(477,000)	21,000	(1,003,000)
Assets	$ 53,521,000	$ 58,764,000	$ 53,521,000	$ 58,764,000