Common Stock and Class B Common Stock (Details) - USD ($)	12 Months Ended
	Sep. 30, 2018	Sep. 24, 2017	Sep. 25, 2016	Mar. 30, 2014
Common Stock, Effect of Plan of Reorganization [Line Items]
Warrant liability fair value	$ 1,807,000	$ 1,580,000	$ 11,760,000	$ 16,930,000
Sunset Level Provisions	5,600,000
Investment Warrants, Exercise Price	$ 4.19
Class of Warrant or Right, Outstanding	6,000,000
Before January 30, 2012 Refinancing [Member]
Common Stock, Effect of Plan of Reorganization [Line Items]
Common Stock, Par or Stated Value Per Share	$ 2.00
After January 30, 2012 Refinancing [Member]
Common Stock, Effect of Plan of Reorganization [Line Items]
Common Stock, Par or Stated Value Per Share	$ 0.01
2nd Lien Agreement [Member]
Common Stock, Effect of Plan of Reorganization [Line Items]
Common Stock Issued In Refinancing, Percent of Total On A Pro Forma Basis	13.00%
Class of Warrant or Right, Outstanding	6,743,640
New Second Lien Loan [Member]
Common Stock, Effect of Plan of Reorganization [Line Items]
Common Stock Issued In Refinancing, Percent of Total On A Pro Forma Basis	10.00%
Class of Warrant or Right, Outstanding	6,000,000