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Note 8 - Accrued Retirement Benefits - Net Periodic Cost (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
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