Shareholders' Equity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Components of comprehensive income (loss)
Net income	$ 20,935	$ 21,193	$ 47,317	$ 41,948
Other comprehensive (loss) income:
Foreign currency translation adjustment	(8,117)	3,088	(11,159)	1,291
Unrealized (loss) gain on investment securities available for sale, net of income tax	29	59	(111)	104
Tax effect of Unrealized (loss) gain on investment securities available for sale	18	43	(64)	68
Reclassification of actuarial losses and prior service cost into selling, distribution and administrative expense (included in net periodic pension costs), net of income tax	287	341	574	760
Tax effect on Reclassification of actuarial losses and prior service cost into selling, distribution and administrative expense (included in net periodic pension costs)	180	212	360	347
Actuarial loss on remeasurement, net of income tax	(302)		(302)
Tax effect of actuarial loss on remeasurement	(190)		(190)
Impact of reduction in postemployment benefit liability (as future forecasted salary increases will not be realized) due to the plan curtailment, net of income tax	5,449		5,449
Tax Effect on Other Comprehensive Income, Impact of Reduction in Postemployment Benefit Liability Due to the Plan Curtailment	3,411		3,411
Reclassification of prior service cost into selling, distribution and administrative expense upon plan curtailment, net of income tax	1,917		1,917
Tax Effect on Other Comprehensive Income, Reclassification of Prior Service Cost into Selling, Distribution and Administrative Expense Upon Plan Curtailment	1,200		1,200
Cash flow hedging activity, net of income tax		846		(184)
Tax effect of Cash flow hedging activity		344		(82)
Reclassification of pension and postemployment expense into income, net of income tax				200
Tax effect of Reclassification of interest expense into income				116
Total comprehensive income	$ 20,198	$ 25,527	$ 43,685	$ 44,119
Stock option and stock appreciation rights related to acquisition	251	102	276	297