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Note 8 - Accrued Retirement Benefits (Tables)
6 Months Ended
Jun. 30, 2015
Notes Tables  
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
 
 
June 30,
 
 
December 31,
 
 
 
2015
 
 
2014
 
 
 
(in thousands)
 
                 
Defined Benefit Pension Plans
  $ 2,178     $ 2,540  
Supplemental Executive Retirement Plan
    4,528       4,468  
Deferred Compensation Plan
    242       276  
Total
    6,948       7,284  
Less current portion
    (364 )     (391 )
Non-current portion of accrued retirement benefits
  $ 6,584     $ 6,893  
Schedule of Net Benefit Costs [Table Text Block]
 
 
Three Months
 
 
Six Months
 
 
 
Ended June 30,
 
 
Ended June 30,
 
 
 
2015
 
 
2014
 
 
2015
 
 
2014
 
 
 
(in thousands)
 
 
(in thousands)
 
Interest cost
  $ 691     $ 772     $ 1,382     $ 1,544  
Expected return on plan assets
    (826 )     (777 )     (1,652 )     (1,554 )
Recognized actuarial loss
    211       146       422       292  
Pension and other postretirement expenses
  $ 76     $ 141     $ 152     $ 282