Employee 401(k) Plan (Narrative) (Details) (USD $)	12 Months Ended
	Sep. 30, 2012
Schedule of Defined Contribution Plan [Line Items]
Annual employee contributions	$ 17,000
Percent of annual compensation for employee contributions	60.00%
Participates older than 50
Schedule of Defined Contribution Plan [Line Items]
Annual employee contributions	$ 22,500
Age for larger maximum annual employee contributions	50 years