Taxes on Income (Details) - Significant components of the Company`s deferred income tax assets and liabilities - USD ($)	Dec. 31, 2019	Apr. 10, 2019	Dec. 31, 2018	Jun. 26, 2012
Deferred income tax asset:
Tax credit carryforwards			$ 30,000
Operating loss carryforwards	1,487,000	$ 3,000,000	5,347,000	$ 5,900,000
Net pension costs	2,210,000		2,357,000
Accruals			(3,000)
Allowance for bad debts	182,000		467,000
Other	148,000		302,000
Valuation allowance	(3,563,000)		(7,447,000)
Deferred income tax asset, Total	464,000		1,053,000
Deferred income tax liability:
Depreciation	345,000		425,000
Other	119,000		628,000
Deferred income tax liability, Total	464,000		1,053,000
Net deferred income taxes