Debt Schedule Of Financing Fees (Details) (USD $)	3 Months Ended			6 Months Ended		12 Months Ended		15 Months Ended
	Mar. 31, 2013	Mar. 25, 2012	Sep. 25, 2011	Mar. 31, 2013	Mar. 25, 2012	Sep. 30, 2012	Sep. 25, 2011	Sep. 30, 2012	Jan. 30, 2012
Schedule Of Financing Fees [Line Items]
Payments of Financing Costs			$ 6,273,000	$ 100,000	$ 23,563,000			$ 38,628,000
Amortization of Debt Issue Costs- Refinance								1,740,000
Chapter 11 Expenses							720,000
Unamortized Debt Issuance Expense		4,514,000			4,514,000
Present Value Discount									(23,709,000)
Amortization Of Present Value Discount- Current Fiscal Year	4,085,000			4,085,000
Amortization Of Present Value Discount- Next Fiscal Year	6,681,000			6,681,000
Amortization Of Present Value Discount- Year 3	4,779,000			4,779,000
Amortization Of Present Value Discount- Year 4	4,742,000			4,742,000
Amortization Of Present Value Discount- Year 5	2,297,000			2,297,000
Amortization Of Present Value Discount- Year 6	1,125,000			1,125,000
Debt Instrument, Unamortized Discount									12,250,000
Reorganization costs	0	36,626,000	720,000	0	37,867,000	37,765,000		38,485,000
2nd Lien Agreement [Member]
Schedule Of Financing Fees [Line Items]
Refinancing Cost, Common Stock Value, Per Share									$ 1.42
Fair Value Of Stock Issued In Refinancing									9,576,000
Debt Instrument, Unamortized Discount									$ 8,750,000