CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock	Paid-in- Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning Balance at Sep. 30, 2012	$ 474,406	$ 348	$ 1,103,611	$ (1,718,570)	$ 1,104,825	$ (15,808)
Beginning Balance (in shares) at Sep. 30, 2012		34,839
Share-based compensation	18,897		18,897
Share-based compensation(Shares)
Issuance of treasury stock under employee stock plans (in shares)		1,325
Issuance of treasury stock under employee stock plans	23,790	14	(18,398)	42,174
Tax effect from share-based payment arrangements	2,245		2,245
Repurchases of common stock (shares)		(986)
Repurchases of common stock	(47,811)	(10)		(47,801)
Dividends paid ($0.02 per share)	(2,123)				(2,123)
Net income	61,538				61,538
Translation adjustments	(15,705)					(15,705)
Ending Balance at Jun. 30, 2013	$ 515,237	$ 352	$ 1,106,355	$ (1,724,197)	$ 1,164,240	$ (31,513)
Ending Balance (in shares) at Jun. 30, 2013		35,178