Note 11 - Status of Defined Benefit Plans - US & UK Combined (Details) - US and UK Plans Combined [Member] - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Change in Benefit Obligations [Member]
Benefit obligation at beginning of year	$ 161,062,000	$ 141,316,000	$ 145,595,000
Service cost	2,663,000	2,709,000	3,017,000
Interest cost	6,818,000	6,922,000	6,057,000
Participant contributions	0	183,000	242,000
Exchange rate changes	(4,167,000)	5,359,000	(1,344,000)
Benefits paid	(6,524,000)	(5,956,000)	(5,918,000)
Actuarial (gain) loss	6,337,000	10,529,000	(6,333,000)
Benefit obligation at end of year	166,189,000	161,062,000	141,316,000
Change in Plan Assets [Member]
Participant contributions	0	183,000	242,000
Exchange rate changes	(3,128,000)	4,095,000	(1,039,000)
Benefits paid	(6,524,000)	(5,956,000)	(5,918,000)
Fair value of plan assets at beginning of year	122,924,000	109,326,000	107,368,000
Actual return on plan assets	3,466,000	14,105,000	6,878,000
Employer contributions	6,049,000	1,171,000	1,795,000
Fair value of plan assets at end of year	122,787,000	122,924,000	109,326,000
Amounts Recongnized in Balance Sheet [Member]
Current liability	(37,000)	(37,000)	(33,000)
Noncurrent liability	(43,365,000)	(38,101,000)	(31,957,000)
Net amount recognized in balance sheet	(43,402,000)	(38,138,000)	(31,990,000)
Components of Net Periodic Benefit Cost [Member]
Service cost	2,663,000	2,709,000	3,017,000
Interest cost	6,818,000	6,922,000	6,057,000
Expected return on plan assets	(6,966,000)	(6,332,000)	(5,961,000)
Amortization of prior service cost	0	116,000	234,000
Recognized actuarial loss	1,309,000	398,000	0
Net periodic benefit cost	3,824,000	3,813,000	3,347,000
Funded status at end of year	(43,402,000)	(38,138,000)	(31,990,000)
Net amount recognized in balance sheet	(43,402,000)	(38,138,000)	(31,990,000)
Prior service cost	0	0	(116,000)
Accumulated loss	(16,795,000)	(8,686,000)	(5,919,000)
Amounts not yet recognized as a component of net periodic benefit cost	(16,795,000)	(8,686,000)	(6,035,000)
Accumulated net periodic benefit cost in excess of contributions	(26,607,000)	(29,452,000)	(25,955,000)
Recognized actuarial loss	(53,000)	0	0
Prior service cost	0	(30,000)	(127,000)
Projected benefit obligation	166,189,000	161,062,000	141,316,000
Accumulated benefit obligation	159,174,000	154,163,000	134,594,000
Fair value of assets	$ 122,787,000	$ 122,924,000	$ 109,326,000