Taxes on Income (Details) - Components of income tax expense (benefit) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal
State and local	25,000	25,000
Foreign	16,000	22,000
Income tax (expense) benefit, current	41,000	47,000
Deferred:
Federal
State and local
Income tax (expense) benefit, deferred
Income tax expense	$ 41,000	$ 47,000