Significant Customers (Details)	9 Months Ended
Jun. 30, 2012	Jun. 30, 2011
Significant Customers [Abstract]
Percentage of sales to one customer	20.00%	18.00%

Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

No definition available.

Name:	us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration