Common Stock, Options Activity (Details) (USD $) In Thousands, except Share data	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Common Stock Options Activity [Abstract]
Outstanding Shares, Beginning of Year	139,550	339,404	420,898
Weighted Average Price, Shares Outstanding, Beginning of Year	$ 4.65	$ 3.11	$ 2.87
Shares Exercised	(102,128)	(199,670)	(81,004)
Weighted Average Price, Shares Exercised	$ 0.96	$ 2.02	$ 1.77
Shares Cancelled or Expired	(37)	(184)	(490)
Weighted Average Price, Shares Cancelled or Expired	$ 17.00	$ 17.00	$ 17.57
Outstanding Shares, End of Year	37,385	139,550	339,404
Weighted Average Price, Shares Outstanding, End of Year	$ 14.73	$ 4.65	$ 3.11
Shares Exercisable, End of Year	37,385	139,550	339,404
Weighted Average Exercise Price	$ 14.73	$ 4.65	$ 3.11
Common Stock Intrinsic Value Details [Abstract]
Common Stock, Intrinsic Value	$ 2,022	$ 7,405