Equity (Schedule of Stock Options Activity) (Details) (USD $)	12 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2011
Number of Shares
Outstanding, beginning of period (in shares)	2,032,215
Granted (in shares)	84,000
Exercised (in shares)	(78,690)
Forfeited (in shares)	(67,192)
Expired (in shares)	(224,385)
Outstanding, end of period (in shares)	1,745,948		2,032,215
Exercisable as of September 30, 2013 (in shares)	1,535,077
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 17.76
Granted (in dollars per share)	$ 4.46
Exercised (in dollars per share)	$ 4.93
Forfeited (in dollars per share)	$ 7.04
Expired (in dollars per share)	$ 20.34
Outstanding, end of period (in dollars per share)	$ 17.78		$ 17.76
Exercisable as of September 30, 2013 (in dollars per share)	$ 19.56
Weighted Average Remaining Contractual Life (in years):
Outstanding as of September 30, 2013	4 years 4 months 2 days
Exercisable as of September 30, 2013	3 years 9 months 22 days
Vested and Expected to Vest as of September 30, 2013
Number of stock options	1,711,395
Weighted average exercise price	$ 18.04
Weighted average remaining contractual term	4 years 3 months 4 days
Aggregate Intrinsic Value (in thousands)
Exercised (in shares)	$ 94,000	[1]	$ 12,000	$ 218,000
Exercisable as of September 30, 2013	43,000	[1]
Vested and expected to vest as of September 30, 2013	110,000	[1]
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, average minimum vesting period (in years)	4 years
Stock options, average maximum vesting period (in years)	5 years
Stock options, contractual life (in years)	10 years
Unrecognized Stock-based Compensation Expense:
Unrecognized compensation expense	$ 600,000
Unrecognized compensation expense, period for recognition	3 years 1 month 6 days

[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. For the fiscal years ended September 30, 2012 and 2011, the intrinsic value of options exercised was $12,000 and $218,000, respectively.