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SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN (Tables)
3 Months Ended
Mar. 31, 2012
SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN [Abstract]  
Components of net periodic pension cost
The components of net periodic pension cost were as follows for the three months ended March 31 (in thousands),

   
2012
  
2011
 
Service cost
 $144  $136 
Interest cost
  96   96 
Amortization of prior service cost
  146   146 
Amortization of actuarial loss
  2   4 
Total net periodic benefit cost
 $388  $382