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Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Consolidated Statements Of Comprehensive Income [Abstract]
Net income including portion attributable to noncontrolling interest in earnings of joint venture	$ 41,280	$ 33,499	$ 83,393	$ 62,324
Change in foreign currency translation adjustment	(1,026)	(2,018)	(3,960)	2,855
Effect of changes in actuarial assumptions and recognition of prior service cost	(27)		(27)
Comprehensive income	$ 40,227	$ 31,481	$ 79,406	$ 65,179

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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