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, 2013	$ 530,677	$ 348	$ 1,110,198	$ (1,751,057)	$ 1,192,096	$ (20,908)
Beginning Balance (in shares) at Sep. 30, 2013		34,786
Share-based compensation	7,235		7,235
Issuance of treasury stock under employee stock plans (in shares)		561
Issuance of treasury stock under employee stock plans	2,011	5	(16,227)	18,233
Tax effect from share-based payment arrangements	4,196		4,196
Repurchases of common stock (shares)		(438)
Repurchases of common stock	(24,984)	(4)		(24,980)
Dividends paid ($0.02 per share)	(694)				(694)
Net income	16,977				16,977
Foreign currency translation adjustments	4,005					4,005
Ending Balance at Dec. 31, 2013	$ 539,423	$ 349	$ 1,105,402	$ (1,757,804)	$ 1,208,379	$ (16,903)
Ending Balance (in shares) at Dec. 31, 2013		34,909