Note 4. Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			$ 312,449
Other comprehensive income (loss) before reclassifications			236	$ (10,605)
Reclassification to (earnings) loss	$ 637	$ (1,865)	1,575	(3,613)
Net current-period other comprehensive income (loss)			1,811	(14,218)
Accumulated other comprehensive income (loss), ending balance	324,698		324,698
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(12,247)	1,619
Accumulated other comprehensive income (loss), ending balance	(10,436)	(12,599)	(10,436)	(12,599)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(9,113)	4,925
Other comprehensive income (loss) before reclassifications			1,363	(16,482)
Reclassification to (earnings) loss			0	0
Net current-period other comprehensive income (loss)			1,363	(16,482)
Accumulated other comprehensive income (loss), ending balance	(7,750)	(11,557)	(7,750)	(11,557)
Derivative Gain (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(3,557)	(3,406)
Other comprehensive income (loss) before reclassifications			(1,404)	5,599
Reclassification to (earnings) loss			1,673	(3,577)
Net current-period other comprehensive income (loss)			269	2,022
Accumulated other comprehensive income (loss), ending balance	(3,288)	(1,384)	(3,288)	(1,384)
Postemployment Benefits, Prior Service Costs
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(18)	(35)
Other comprehensive income (loss) before reclassifications			0	0
Reclassification to (earnings) loss			18	17
Net current-period other comprehensive income (loss)			18	17
Accumulated other comprehensive income (loss), ending balance	0	(18)	0	(18)
Postemployment Benefits, Net Actuarial Gain
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			441	135
Other comprehensive income (loss) before reclassifications			277	278
Reclassification to (earnings) loss			(116)	(53)
Net current-period other comprehensive income (loss)			161	225
Accumulated other comprehensive income (loss), ending balance	$ 602	$ 360	$ 602	$ 360