Equity (Schedule of Stock Options Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Jun. 30, 2015	Sep. 30, 2014
Number of Shares
Outstanding, beginning of period (in shares)	1,431,190
Granted (in shares)	17,150
Exercised (in shares)	(225,736)
Forfeited (in shares)	(9,077)
Expired (in shares)	(297,499)
Outstanding, end of period (in shares)	916,028	1,431,190
Exercisable as of June 30, 2015 (in shares)	891,351
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 19.06
Granted (in dollars per share)	5.68
Exercised (in dollars per share)	4.78
Forfeited (in dollars per share)	5.28
Expired (in dollars per share)	19.83
Outstanding, end of period (in dollars per share)	22.22	$ 19.06
Exercisable as of June 30, 2015	$ 22.68
Weighted Average Remaining Contractual Life (in years):
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	2 years 5 months 16 days
Exercisable as of June 30, 2015	2 years 3 months 11 days
Vested and expected to vest as of June 30, 2015
Number of stock options	911,032
Weighted average exercise price	$ 22.31
Weighted average remaining contractual term	2 years 5 months 5 days
Aggregate Intrinsic Value (in thousands) (USD per share)
Exercised (USD per share)	$ 194	$ 4
Outstanding as of June 30, 2015	347
Exercisable as of June 30, 2015	330
Vested and expected to vest as of June 30, 2015	$ 344