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Note 11 - Retirement Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
United States Pension Plan of US Entity [Member]        
Service cost $ 16 $ 53 $ 34 $ 106
Interest cost 2,873 2,619 5,745 5,238
Expected return on plan assets (3,465) (3,489) (6,932) (6,977)
Recognized net actuarial loss 995 986 1,990 1,973
Amortization of prior service cost 3 14 7 27
Net periodic benefit cost 422 183 844 367
Foreign Pension Plan [Member]        
Service cost 8 12 17 24
Interest cost 363 409 734 840
Expected return on plan assets (330) (371) (667) (763)
Recognized net actuarial loss 213 189 430 389
Amortization of prior service cost (12) (14) (24) (28)
Net periodic benefit cost $ 242 $ 225 $ 490 $ 462