Equity - Stock Option Disclosures (Details) (USD $)	3 Months Ended			9 Months Ended
	Jun. 30, 2012		Jun. 30, 2011	Jun. 30, 2012		Jun. 30, 2011
Stock Options, Outstanding [Roll Forward]
Stock Options, Outstanding, End of Period	2,109,032			2,109,032
Stock Options [Member]
Stock Options, Average Minimum Vesting Period (in years)				4
Stock Options, Average Maxmum Vesting Period (in years)				5
Stock Options, Contractual Life (in years)				10
Stock Options, Outstanding [Roll Forward]
Stock Options, Outstanding, Beginning of Period				2,259,197
Stock Options, Granted				32,353
Stock Options, Exercised				(4,480)
Stock Options, Forfeited				(97,197)
Stock Options, Expired				(80,841)
Stock Options, Outstanding, End of Period	2,109,032			2,109,032
Stock Options, Exercisable	1,622,462			1,622,462
Stock Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Stock Options, Outstanding, Beginning of Period				$ 17.76
Stock Options, Granted				$ 4.06
Stock Options, Exercised				$ 4.76
Stock Options, Forfeited				$ 9.35
Stock Options, Expired				$ 18.28
Stock Options, Outstanding, End of Period	$ 17.95			$ 17.95
Stock Options, Exercisable	$ 21.54			$ 21.54
Weighted Average Remaining Contractual Life (in years):
Stock Options, Outstanding, Beginning of Period				6.43
Stock Options, Outstanding, End of Period	5.54			5.54
Stock Options, Exercisable	4.89			4.89
Stock Options, Vested and Expected to Vest
Number of Stock Options	2,056,013			2,056,013
Weighted Average Exercise Price	$ 18.26			$ 18.26
Weighted Average Remaining Contractual Term	5.47			5.47
Aggregate Intrinsic Value
Stock Options, Exercised				$ 3,000	[1]
Stock Options, Exercisable	25,000	[1]		25,000	[1]
Stock Options, Vested and Expected to Vest	83,000	[1]		83,000	[1]
Unrecognized Stock-based Compensation Expense:
Total Unrecognized Compensation Expense	$ 1,500,000			$ 1,500,000
Total Unrecognized Compensation Expense, Period for Recognition (in years)	2.1			2.1
Fair Value Disclosures:
Expected dividend rate	0.00%		0.00%	0.00%		0.00%
Expected stock price volatility rate	104.20%		101.30%	104.40%		99.20%
Risk-free interest rate	0.80%		1.70%	0.80%		1.40%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term, Years	5		5	5		4.9
Weighted average grant date fair value, stock option grants in period	$ 3.04		$ 6.92	$ 3.09		$ 4.24

[1] (*) Intrinsic value for stock options represents the “in-the-money” portion or the positive variance between a stock option's exercise price and the underlying stock price.