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Note 12 - Pension Plan
3 Months Ended
Mar. 31, 2016
Notes to Financial Statements  
Pension and Other Postretirement Benefits Disclosure [Text Block]
(12)
PENSION PLAN
 
The Partnership sponsors a defined benefit pension plan covering employees who are members of a union bargaining unit. The Partnership’s funding policy is to contribute an amount to the plan sufficient to meet the minimum funding requirements set forth in the Employee Retirement Income Security Act of 1974.
 
The components of net periodic pension cost consisted of the following (in thousands):
 
 
 
Three Months Ended March 31,
 
 
 
2016
 
 
2015
 
Service cost
  $ 16     $ 17  
Interest cost
    17       15  
Expected return on plan assets
    (16 )     (17 )
Amortization of net actuarial loss and prior service cost
    2       2  
Net periodic pension cost
  $ 19     $ 17