Taxes on Income (Details) - Significant components of the Company`s deferred income tax assets and liabilities - USD ($)	Dec. 31, 2022	Dec. 31, 2021	Apr. 10, 2019	Jun. 26, 2012
Deferred income tax asset:
Tax credit carryforwards
Operating loss carryforwards	4,348,000	4,000,000	$ 2,900,000	$ 5,900,000
Net pension costs	2,049,000	2,123,000
Allowance for bad debts	65,000	227,000
Other	7,000	6,000
Valuation allowance	(6,102,000)	(5,989,000)
Deferred income tax asset, Total	367,000	367,000
Deferred income tax liability:
Depreciation	120,000	124,000
Other	247,000	243,000
Deferred income tax liability, Total	367,000	367,000
Net deferred income taxes