Segment Reporting (Details) - Schedule of operating segments - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
COMPLEX MACHINING
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	$ 13,783,000	$ 7,308,000	$ 25,949,000	$ 19,372,000
Gross Profit	2,325,000	681,000	3,944,000	2,849,000
Income (Loss) before benefit from income taxes	1,573,000	(10,000)	2,553,000	1,160,000
Assets	51,956,000	48,490,000	51,956,000	48,490,000
TURBINE ENGINE COMPONENTS
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	1,670,000	1,186,000	3,216,000	2,569,000
Gross Profit	278,000	(67,000)	456,000	(54,000)
Income (Loss) before benefit from income taxes	114,000	(217,000)	99,000	(343,000)
Assets	3,471,000	4,430,000	3,471,000	4,430,000
CORPORATE
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales
Gross Profit
Income (Loss) before benefit from income taxes	(1,448,000)	(1,357,000)	(2,565,000)	(2,757,000)
Assets	823,000	1,808,000	823,000	1,808,000
CONSOLIDATED
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	15,453,000	8,494,000	29,165,000	21,941,000
Gross Profit	2,603,000	614,000	4,400,000	2,795,000
Income (Loss) before benefit from income taxes	239,000	(1,584,000)	87,000	(1,940,000)
Benefit from Income Taxes				(1,414,000)
Net Income (loss)	239,000	(1,584,000)	87,000	(526,000)
Assets	$ 56,250,000	$ 54,728,000	$ 56,250,000	$ 54,728,000