Note 16. Comprehensive Income - Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Net income (loss)	$ 6,077	$ 2,506	$ 3,197	$ (146)	$ 284	$ 3,306	$ 876	$ 456	$ 11,634	$ 4,922	$ 10,803
Other comprehensive income (loss):
Foreign currency translation adjustments, Pre-tax									(10,156)	13,218	(12,672)
Foreign currency translation adjustments, Tax									1,922	(2,905)	2,288
Foreign currency translation adjustments, Net of Tax									(8,234)	10,313	(10,384)
Postemployment severance actuarial change, Pre-tax									1,265	1,501	(1,292)
Postemployment severance actuarial change, Tax									(505)	(599)	515
Postemployment severance actuarial change, Net of Tax									760	902	(777)
Other fair value changes:
Available-for-sale securities, Other fair value changes, Pre-Tax									0	0	(131)
Available-for-sale securities, Other fair value changes, Tax									0	0	52
Available-for-sale securities, Other fair value changes, Net of Tax									0	0	(79)
Derivatives, Other fair value changes, Pre-tax									(192)	1,063	2,494
Derivatives, Other fair value changes, Tax									302	(489)	(587)
Derivatives, Other fair value changes, Net of Tax									110	574	1,907
Reclassification to (earnings) loss:
Foreign currency translation adjustments, Reclassification to (earnings) loss, Pre-tax									(493)	0	0
Foreign currency translation adjustments, Reclassification to (earnings) loss, Tax									0	0	0
Foreign currency translation adjustments, Reclassification to (earnings) loss, Net of Tax									(493)	0	0
Available-for-sale securities, Reclassification to (earnings) loss, Pre-tax									0	0	(639)
Available-for-sale securities, Reclassification to (earnings) loss, Tax									0	0	255
Available-for-sale securities, Reclassification to (earnings) loss, Net of Tax									0	0	(384)
Derivatives, Reclassification to (earnings) loss, Pre-tax									1,069	(1,555)	(238)
Derivatives, Reclassification to (earnings) loss, Tax									(346)	523	55
Derivatives, Reclassification to (earnings) loss, Net of Tax									723	(1,032)	(183)
Amortization of prior service cost, Pre-tax									286	286	285
Amortization of prior service costs, Tax									(114)	(115)	(112)
Amortization of prior service costs, Net of Tax									172	171	173
Amortization of actuarial change, Pre-tax									633	774	753
Amortization of actuarial change, Tax									(252)	(309)	(300)
Amortization of actuarial change, Net of Tax									381	465	453
Other comprehensive income (loss), Pre-tax									(7,588)	15,287	(11,440)
Other comprehensive income (loss), Tax									1,007	(3,894)	2,166
Other comprehensive income (loss), Net of Tax									(6,581)	11,393	(9,274)
Total comprehensive income (loss)									$ 5,053	$ 16,315	$ 1,529