LIABILITY FOR EMPLOYEE RIGHTS UPON RETIREMENT (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
LIABILITY FOR EMPLOYEE RIGHTS UPON RETIREMENT [Abstract]
Employee severance obligation payments	$ 195,000	$ 194,000	$ 177,000
Severance expense	1,000,000	1,000,000	1,000,000
Contributions	779,000	801,000	670,000
Net (gain) or loss for the period	22,000	58,000	36,000
Expected severance liabilities payments for fiscal year end 2015	863,000
Expected contribution to one or more Contribution Plans	$ 685,000