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EMPLOYEE BENEFIT PLANS (Schedule of Components of Net Periodic Benefit Cost) (Details) (Pension Plans [Member], USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Pension Plans [Member]
      
COMPONENTS OF NET PERIODIC BENEFIT COST:      
Service cost $ 1,593 $ 1,335 $ 1,097
Interest cost 1,234 1,198 1,186
Expected return on plan assets (1,656) (1,582) (1,467)
Amortization of prior year service cost (19) 7 15
Amortization of transition asset (17) (17) (17)
Recognized net actuarial loss 1,094 800 706
Net periodic pension cost $ 2,229 $ 1,741 $ 1,520