Note 12 - Employee Benefit and Retirement Plans - Reconciliation of Level 3 Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Fair value of plan assets at beginning of year	$ 117,778	$ 115,015	$ 122,787
Actual return on plan assets	2,545	5,302	226
Fair value of plan assets at end of year	118,693	117,778	115,015
Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets at beginning of year		2,810
Actual return on plan assets
Translation gain (loss)
Transferred out of Level 3		(2,810)
Fair value of plan assets at end of year			$ 2,810