Note 6 - Accumulated Other Comprehensive Income - Changes in Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Beginning balance			$ 879,280
Other comprehensive income (loss)	$ 1,925	$ (24,953)	5,111	$ (45,867)
Ending balance	907,925		907,925
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Beginning balance			(5,542)
Other comprehensive income (loss)			16,010
Ending balance	10,468		10,468
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Beginning balance			(64,863)
Other comprehensive income (loss)			(10,899)
Ending balance	(75,762)		(75,762)
AOCI Attributable to Parent [Member]
Beginning balance			(70,405)
Other comprehensive income (loss)			5,111
Ending balance	$ (65,294)		$ (65,294)