CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in-Capital [Member]	Accumulated Deficit [Member]	Parent [Member]	Restricted Stock Units (RSUs) [Member]
Balance at Sep. 30, 2013	$ 15,908	$ 575	$ 1,891,661	$ (1,876,328)	$ 15,908
Balance (in shares) at Sep. 30, 2013		57,545
Increase (Decrease) in Stockholders' Equity
Net loss	(11,202)				(11,202)
Compensation expense related to stock options, awards and ESPP			2,880		2,880
Stock Issued During Period, Shares, Exercise of Stock Options		21
Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Issuance of Common Stock Upon Exercise			47		47
Stock Issued During Period, Shares, Employee Stock Purchase Plans		366
Stock Issued During Period, Value, Employee Stock Purchase Plan		4	905		909
Release of restricted stock units (in shares)		1,161
Release of restricted stock units		12	(12)
Repurchase and retirement of restricted stock units for payroll taxes (in shares)		(377)
Repurchase and retirement of restricted stock units for payroll taxes		(4)			(1,242)	(1,238)
Other			62		62
Balance at Mar. 31, 2014	$ 7,362	$ 587	$ 1,894,305	$ (1,887,530)	$ 7,362
Balance (in shares) at Mar. 31, 2014		58,716