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Fair Value Measurements Fair Value Measurements (Details) - USD ($)
Mar. 26, 2017
Dec. 25, 2016
Sep. 25, 2016
Mar. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt, Long-term and Short-term, Combined Amount $ 584,918,000   $ 617,167,000  
Warrant liability fair value 4,382,000 $ 8,665,000 11,760,000 $ 16,930,000
1st Lien Agreement [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Long-term Debt, Fair Value 70,277,000      
Senior Notes [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Long-term Debt, Fair Value 399,437,000      
Debt, Long-term and Short-term, Combined Amount 385,000,000   385,000,000  
New Second Lien Loan [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt, Long-term and Short-term, Combined Amount 129,684,000   $ 130,863,000  
2nd Lien Agreement [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Long-term Debt, Fair Value $ 136,492,000