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Debt Schedule of Long-Term Debt Instruments (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 26, 2017 | Mar. 27, 2016 | Mar. 26, 2017 | Mar. 27, 2016 | Dec. 25, 2016 | Sep. 25, 2016 | Mar. 31, 2014 | Mar. 30, 2014
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Unamortized Debt Issuance Expense | $ (24,421,000) |  | $ (24,421,000) |  |  | $ (26,271,000) |  |
Amortization of Debt Issuance Costs | 952,000 | $ 1,844,000 | 1,852,000 | $ 3,080,000 |  |  |  |
Warrant liability fair value | $ 4,382,000 |  | $ 4,382,000 |  | $ 8,665,000 | 11,760,000 |  | $ 16,930,000
Debt, Weighted Average Interest Rate | 9.80% |  | 9.80% |  |  |  |  |
Debt, Long-term and Short-term, Combined Amount | $ 584,918,000 |  | $ 584,918,000 |  |  | 617,167,000 |  |
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year | 16,988,000 |  | 16,988,000 |  |  |  |  |
Long-term Debt, Maturities, Repayments of Principal in Year Two | 25,000,000 |  | 25,000,000 |  |  |  |  |
Long-term Debt, Maturities, Repayments of Principal in Year Three | 32,734,000 |  | 32,734,000 |  |  |  |  |
Long-term Debt, Maturities, Repayments of Principal in Year Four | 0 |  | 0 |  |  |  |  |
Long-term Debt, Maturities, Repayments of Principal in Year Five | 0 |  | 0 |  |  |  |  |
Long-term Debt, Maturities, Repayments of Principal after Year Five | 510,196,000 |  | 510,196,000 |  |  |  |  |
Long-term Debt, Current Maturities | 29,500,000 |  | 29,500,000 |  |  | 25,070,000 |  |
Long-term Debt | 530,997,000 |  | 530,997,000 |  |  | 565,826,000 |  |
Liquidity | 49,321,000 |  | 49,321,000 |  |  |  |  |
Future Liquidity- Warrant Exercise Proceeds |  |  | 25,140,000 |  |  |  |  |
Revolving Line Of Credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt, Long-term and Short-term, Combined Amount | $ 0 |  | $ 0 |  |  | 0 |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.48% |  | 6.48% |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity | $ 33,318,000 |  | $ 33,318,000 |  |  |  |  |
Line of Credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | 40,000,000 |  | 40,000,000 |  |  |  |  |
Senior Notes [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 400,000,000 |  | $ 400,000,000 |  |  |  |  |
Debt Instrument, Interest Rate at Period End | 9.50% |  | 9.50% |  |  |  |  |
Debt, Long-term and Short-term, Combined Amount | $ 385,000,000 |  | $ 385,000,000 |  |  | 385,000,000 |  |
Debt Instrument, Interest Rate, Stated Percentage | 9.50% |  | 9.50% |  |  |  |  |
New 1st Lien Term Loan [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 250,000,000 |  | $ 250,000,000 |  |  |  |  |
Debt, Long-term and Short-term, Combined Amount | $ 70,234,000 |  | $ 70,234,000 |  |  | 101,304,000 |  |
Debt Instrument, Interest Rate, Stated Percentage | 7.25% |  | 7.25% |  |  |  |  |
Debt Instrument, Unamortized Discount |  |  |  |  |  |  | $ 5,000,000 |
New Second Lien Loan [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 150,000,000 |  | $ 150,000,000 |  |  |  |  |
Debt Instrument, Interest Rate at Period End | 12.00% |  | 12.00% |  |  |  |  |
Debt, Long-term and Short-term, Combined Amount | $ 129,684,000 |  | $ 129,684,000 |  |  | $ 130,863,000 |  |
Debt Instrument, Interest Rate, Stated Percentage | 12.00% |  | 12.00% |  |  |  |  |
Federal Funds Rate [Member] | Revolving Line Of Credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest Rate Margin | 4.50% |  | 4.50% |  |  |  |  |
Federal Funds Rate [Member] | New 1st Lien Term Loan [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Base Interest Rate | 0.50% |  | 0.50% |  |  |  |  |
Interest Rate Margin | 5.25% |  | 5.25% |  |  |  |  |
Prime Lending Rate [Member] | New 1st Lien Term Loan [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Base Interest Rate | 2.00% |  | 2.00% |  |  |  |  |
30 Day LIBOR [Member] | Revolving Line Of Credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest Rate Margin | 5.50% |  | 5.50% |  |  |  |  |
30 Day LIBOR [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Base Interest Rate | 0.50% |  | 0.50% |  |  |  |  |
30 Day LIBOR [Member] | New 1st Lien Term Loan [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Base Interest Rate | 1.00% |  | 1.00% |  |  |  |  |
Interest Rate Margin | 6.25% |  | 6.25% |  |  |  |  |
March 16, 2018 through March 15, 2019 [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed |  |  | 104.75% |  |  |  |  |
March 15, 2019 through March 14, 2020 [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed |  |  | 102.38% |  |  |  |  |
After March 15, 2020 [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed |  |  | 100.00% |  |  |  |  |
March 31, 2017 through March 31, 2018 [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed |  |  | 0.00% |  |  |  |  |
March 31, 2018 through March 31, 2019 [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed |  |  | 103.00% |  |  |  |  |
After March 31, 2019 [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed |  |  | 0.00% |  |  |  |  |
Mandatory Payment [Member] | 1st Lien Agreement [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Repayments of Long-term Debt | $ 6,250,000 |  |  |  |  |  |  |

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