Note 16. Comprehensive Income - Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Foreign currency translation adjustments	$ (977)	$ 7,750	$ (2,563)
Net unrealized gain (loss) on derivatives	(3,632)	(4,465)	(4,007)
Postemployment benefits:
Prior service costs	(464)	(636)	(807)
Net actuarial gain (loss)	110	(1,031)	(2,398)
Accumulated other comprehensive income (loss)	$ (4,963)	$ 1,618	$ (9,775)