Summary of Significant Accounting Policies (Revenue Recognition) (Details)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Hardware products
Concentration Risk [Line Items]
Percentage of revenue	88.60%	94.70%	94.60%
Service
Concentration Risk [Line Items]
Percentage of revenue	11.40%	5.30%	5.40%