Significant Accounting Policies Concentration of Risk (Details)	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Mar. 31, 2013	Apr. 01, 2012	Sep. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration Risk, Percentage	37.00%	42.00%	44.00%	46.00%
Entity-Wide Revenue, Major Customer, Percentage	16.00%	21.00%	19.00%	23.00%
Accounts Receivable, Major Customer, Percentage	9.00%		9.00%		13.00%