Stock-Based Compensation (Stock Options Valuation) (Details) (Stock Options, USD $)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at beginning of period (in shares)	891,293	611,384	636,283
Outstanding at beginning of period, Weighted Average Exercise Price (usd per share)	$ 9.37	$ 10.02	$ 7.59
Granted (in shares)	312,850	285,400	155,233
Granted, Weighted Average Exercise Price (usd per share)	$ 2.95	$ 7.98	$ 16.89
Exercised (in shares)	(8,450)	(600)	(178,882)
Exercised, Weighted Average Exercise Price (usd per share)	$ 3.08	$ 5.33	$ 7.35
Forfeited (in shares)	(136,126)	(4,891)	(1,250)
Forfeited, Weighted Average Exercise Price (usd per share)	$ 15.75	$ 9.50	$ 6.94
Outstanding at end of period (in shares)	1,059,567	891,293	611,384
Outstanding at end of period, Weighted Average Exercise Price (usd per share)	$ 6.71	$ 9.37	$ 10.02
Exercisable at end of period (in shares)	874,591	400,638	232,018
Exercisable at end of period, weighted average exercise price (usd per share)	$ 7.13	$ 9.25	$ 8.31
Weighted average fair value of options granted during the period (usd per share)	$ 1.82	$ 4.95	$ 10.57