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Other Current Liabilities - Components of Other Current Liabilities (Details) - USD ($) $ in Thousands | Sep. 25, 2015 | Dec. 26, 2014 | Dec. 27, 2013
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Other Current Liabilities Details [Abstract] |  |  |
Accrued self-insurance retentions | $ 7,300 | $ 7,089 |
Accrued warranty and service liabilities | 7,691 | 7,609 | $ 7,771
Accrued trade promotions | 6,818 | 7,697 |
Payable for employee stock purchases | 6,724 | 9,126 |
Customer advances and deferred revenue | 15,390 | 8,918 |
Income taxes payable | 7,448 | 5,997 |
Other | 32,790 | 25,157 |
Total other current liabilities | $ 84,161 | $ 71,593 |

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