Description of Business (Details)	12 Months Ended
	Sep. 30, 2012 Customer	Sep. 30, 2011 Customer
Revenue, Major Customer [Line Items]
Maximum percentage of net revenues accounted by other customer during the period (in hundredths)	10.00%
Number of customers representing more than ten percent of company's revenue	0	2
Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of total revenues accounted by largest customers, 10 percent or more (in hundredths)		17.40%
Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of total revenues accounted by largest customers, 10 percent or more (in hundredths)		11.50%