Note 4. Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			$ 324,369
Other comprehensive income (loss) before reclassifications			(1,233)	$ 236
Reclassification to (earnings) loss	$ (303)	$ 637	163	1,575
Net current-period other comprehensive income (loss)			(1,070)	1,811
Accumulated other comprehensive income (loss), ending balance	334,378		334,378
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(12,190)	(12,247)
Accumulated other comprehensive income (loss), ending balance	(13,260)	(10,436)	(13,260)	(10,436)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(9,653)	(9,113)
Other comprehensive income (loss) before reclassifications			(3,272)	1,363
Reclassification to (earnings) loss			0	0
Net current-period other comprehensive income (loss)			(3,272)	1,363
Accumulated other comprehensive income (loss), ending balance	(12,925)	(7,750)	(12,925)	(7,750)
Derivative Gain (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(3,137)	(3,557)
Other comprehensive income (loss) before reclassifications			1,789	(1,404)
Reclassification to (earnings) loss			322	1,673
Net current-period other comprehensive income (loss)			2,111	269
Accumulated other comprehensive income (loss), ending balance	(1,026)	(3,288)	(1,026)	(3,288)
Postemployment Benefits, Prior Service Costs
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			0	(18)
Other comprehensive income (loss) before reclassifications			0	0
Reclassification to (earnings) loss			0	18
Net current-period other comprehensive income (loss)			0	18
Accumulated other comprehensive income (loss), ending balance	0	0	0	0
Postemployment Benefits, Net Actuarial Gain
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			600	441
Other comprehensive income (loss) before reclassifications			250	277
Reclassification to (earnings) loss			(159)	(116)
Net current-period other comprehensive income (loss)			91	161
Accumulated other comprehensive income (loss), ending balance	$ 691	$ 602	$ 691	$ 602