Equity (Schedule of Stock Options Activity) (Details) (USD $)	9 Months Ended
	Jun. 30, 2014		Jun. 30, 2013
Number of Shares
Outstanding, beginning of period (in shares)	1,745,948
Granted (in shares)	35,825
Exercised (in shares)	(7,100)
Forfeited (in shares)	(41,731)
Expired (in shares)	(163,792)
Outstanding, end of period (in shares)	1,569,150
Exercisable as of June 30, 2014 (in shares)	1,409,046
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 17.78
Granted (in dollars per share)	$ 4.74
Exercised (in dollars per share)	$ 4.59
Forfeited (in dollars per share)	$ 4.67
Expired (in dollars per share)	$ 17.12
Outstanding, end of period (in dollars per share)	$ 17.96
Exercisable as of June 30, 2014 (in dollars per share)	$ 19.44
Weighted Average Remaining Contractual Life (in years):
Outstanding as of June 30, 2014	3 years 8 months 5 days
Exercisable as of June 30, 2014	3 years 2 months 9 days
Vested and Expected to Vest as of June 30, 2014
Number of stock options	1,544,771
Weighted average exercise price	$ 18.17
Weighted average remaining contractual term	3 years 7 months 6 days
Aggregate Intrinsic Value (in thousands)
Exercised (in shares)	$ 4,000	[1]	$ 93,000	[1]
Exercisable as of June 30, 2014	32,000	[1]
Vested and expected to vest as of June 30, 2014	50,000	[1]
Employee 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	$ 500,000
Unrecognized compensation expense, period for recognition	2 years 9 months 18 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 nine months ended June 30, 2013, the intrinsic value of options exercised was $93,000.