CONSOLIDATED STATEMENTS 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 and other
Balances at Sep. 30, 2010	$ 281,941	$ 60	$ 633,171	$ (350,940)	$ (350)
Balances (in shares) at Sep. 30, 2010		60,490
Increase (Decrease) in Stockholders' Equity
Issuance of common stock pursuant to employee stock purchase plan	719	1	718
Issuance of common stock pursuant to employee stock purchase plan (in shares)		250
Exercise of stock appreciation rights and restricted stock units	0	0
Exercise of stock appreciation rights and restricted stock units (in shares)		21
Issuance of restricted stock, net of cancellations	0	0
Issuance of restricted stock, net of cancellations (in shares)		186
Stock-based compensation	3,658		3,658
Other	339				339
Net income (loss)	(229,921)			(229,921)
Balances at Sep. 30, 2011	56,736	61	637,547	(580,861)	(11)
Balances (in shares) at Sep. 30, 2011		60,947
Increase (Decrease) in Stockholders' Equity
Issuance of common stock pursuant to employee stock purchase plan	635	0	635
Issuance of common stock pursuant to employee stock purchase plan (in shares)		212
Restricted stock cancellations	0	0
Restricted stock cancellations (in shares)		(13)
Stock-based compensation	1,737		1,737
24 and net 41 share increase in treasury stock held for deferred compensation plan obligations, at cost for the year ended September 30, 2012 and 2013, respectively	0		128		(128)
Other	11				11
Net income (loss)	(62,248)			(62,248)
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	11,500
Issuance of common stock pursuant to employee stock purchase plan	742	0	742
Issuance of common stock pursuant to employee stock purchase plan (in shares)		101
Exercise of stock appreciation rights and restricted stock units	0	0
Exercise of stock appreciation rights and restricted stock units (in shares)		250
Issuance of restricted stock, net of cancellations	0	0
Issuance of restricted stock, net of cancellations (in shares)		152
Stock-based compensation	1,703		1,703
24 and net 41 share increase in treasury stock held for deferred compensation plan obligations, at cost for the year ended September 30, 2012 and 2013, respectively	0		391		(391)
Net income (loss)	7,137			7,137
Balances at Sep. 30, 2013	$ 84,410	$ 73	$ 720,828	$ (635,972)	$ (519)
Balances (in shares) at Sep. 30, 2013		73,149