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Note 11 - Retirement Benefits (Details) - Components of Net Periodic Benefit Cost - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2015
Sep. 30, 2014
United States Pension Plan of US Entity [Member]    
Note 11 - Retirement Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]    
Service cost $ 18 $ 53
Interest cost 2,872 2,619
Expected return on plan assets (3,467) (3,489)
Recognized net actuarial loss 995 986
Amortization of prior service cost 4 14
Net periodic benefit cost 422 183
Foreign Pension Plan [Member]    
Note 11 - Retirement Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]    
Service cost 9 12
Interest cost 371 432
Expected return on plan assets (337) (392)
Recognized net actuarial loss 216 200
Amortization of prior service cost (12) (15)
Net periodic benefit cost $ 247 $ 237