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Note 8 - Accrued Retirement Benefits (Tables)
3 Months Ended
Mar. 31, 2015
Notes Tables  
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
 
 
March 31,
 
 
December 31,
 
 
 
2015
 
 
2014
 
 
 
(in thousands)
 
                 
Defined Benefit Pension Plans
  $ 2,359     $ 2,540  
Supplemental Executive Retirement Plan
    4,485       4,468  
Deferred Compensation Plan
    260       276  
Total
    7,104       7,284  
Less current portion
    (384 )     (391 )
Non-current portion of accrued retirement benefits
  $ 6,720     $ 6,893  
Schedule of Net Benefit Costs [Table Text Block]
 
 
Three
Months
 
 
 
Ended
March 31
,
 
 
 
2015
 
 
201
4
 
 
 
(in
thousands)
 
                 
Interest cost
  $ 691     $ 772  
Expected return on plan assets
    (826
)
    (777
)
Recognized actuarial loss
    211       146  
                 
Pension and other postretirement expenses
  $ 76     $ 141