LIABILITY FOR EMPLOYEE RIGHTS UPON RETIREMENT (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Employee severance obligation payments	$ 168,000	$ 195,000	$ 194,000
Contributions	675,000	779,000	801,000
Expected severance liabilities payments for fiscal year end 2016	841,000
Expected contribution to one or more Contribution Plans	673,000
Severance expense	800,000	1,000,000	1,000,000
Net (gain) or loss for the period	(18,000)	$ 22,000	$ 58,000
Deferred Compensation Arrangement with Individual, Recorded Liability	$ 200,000