CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (NET CAPITAL DEFICIENCY) (USD $) In Thousands, unless otherwise specified	Total	Common stock	Capital in excess of par value	Retained earnings (accumulated deficit)	Treasury stock
Balances at Sep. 30, 2012	$ (3,129)	$ 61	$ 640,047	$ (643,109)	$ (128)
Balances (in shares) at Sep. 30, 2012		61,146
Increase (Decrease) in Stockholders' Equity
Issuance of common stock, net of offering costs of $5,418	77,957	12	77,945
Issuance of common stock, net of offering costs (in shares)		11,500
Issuance of restricted stock, net of cancellations	0	0
Issuance of restricted stock, net of cancellations (in shares)		152
Issuance of common stock pursuant to employee stock purchase plan	454	0	454
Issuance of common stock pursuant to employee stock purchase plan (in shares)		66
Exercise of stock appreciation rights and restricted stock units	0	0
Exercise of stock appreciation rights and restricted stock units (in shares)		190
Stock-based compensation	821		821
Change in treasury shares held for deferred compensation plan obligations, at cost	0		195		(195)
Net loss for the six months ended March 31, 2013	(14,132)			(14,132)
Balances at Mar. 31, 2013	$ 61,971	$ 73	$ 719,462	$ (657,241)	$ (323)
Balances (in shares) at Mar. 31, 2013		73,054