LIABILITY FOR EMPLOYEE RIGHTS UPON RETIREMENT (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) employee	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Employee severance obligation payments	$ 108,000	$ 121,000	$ 143,000
Severance expense	990,000	885,000	784,000
Contributions	857,000	747,000	642,000
Gain for the period	$ 100,000	$ 28,000	$ 58,000
Number of benefit eligible employees | employee	4
Benefits Payable During Next Five Years	$ 72,000
Contribution to Insurance Companies [Member]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	984,000
Contribution to Defined Contribution Plans [Member]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 868,000