Equity Securities and Stock-Based Compensation (Details 3) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013
Equity Securities and Stock-based Compensation
Maximum shares to be issued upon exercise of options and other awards	4,450
Weighted-average exercise price of outstanding options and other awards	$ 9.74
Shares remaining available for future issuance under existing equity compensation plans	3,982
Plans Approved By Stockholders
Equity Securities and Stock-based Compensation
Maximum shares to be issued upon exercise of options and other awards	4,054
Weighted-average exercise price of outstanding options and other awards	$ 9.20
Shares remaining available for future issuance under existing equity compensation plans	3,982
Plans Not Approved By Stockholders
Equity Securities and Stock-based Compensation
Maximum shares to be issued upon exercise of options and other awards	396
Weighted-average exercise price of outstanding options and other awards	$ 15.26
Shares remaining available for future issuance under existing equity compensation plans	0