Note 11 - Retirement Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
United States Pension Plan of US Entity [Member]
Service cost	$ 18	$ 53	$ 52	$ 158
Interest cost	2,872	2,619	8,617	7,857
Expected return on plan assets	(3,466)	(3,489)	(10,398)	(10,466)
Recognized net actuarial loss	994	986	2,984	2,959
Amortization of prior service cost	4	14	11	41
Net periodic benefit cost	422	183	1,266	549
Foreign Pension Plan [Member]
Service cost	9	10	26	34
Interest cost	346	389	1,080	1,229
Expected return on plan assets	(313)	(355)	(980)	(1,118)
Recognized net actuarial loss	201	180	631	569
Amortization of prior service cost	(12)	(12)	(36)	(40)
Net periodic benefit cost	$ 231	$ 212	$ 721	$ 674