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RETIREMENT ANNUITY AND GUARANTEED CONTINUOUS EMPLOYMENT PLANS (Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
U.S. pension plans    
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets    
Projected benefit obligation $ 16,822 $ 34,066
Accumulated benefit obligation 15,223 30,202
Fair value of plan assets 0 11,638
Non-U.S. pension plans    
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets    
Projected benefit obligation 3,393 5,573
Accumulated benefit obligation $ 2,831 $ 3,372