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Income Taxes - Schedule of Components of Net Deferred Income Tax Asset (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 29, 2018 | Sep. 29, 2018 | Sep. 30, 2017 | Oct. 01, 2016
Income Tax Disclosure [Abstract] |  |  |  |
Federal statutory income tax rate | 21.00% | 24.50% | 35.00% | 35.00%
Deferred income tax assets: |  |  |  |
Loss/credit carryforwards | $ 27,915 | $ 27,915 | $ 44,831 |
Inventories | 6,459 | 6,459 | 7,710 |
Accrued benefits | 14,459 | 14,459 | 25,811 |
Other | 3,450 | 3,450 | 3,051 |
Total gross deferred income tax assets | 52,283 | 52,283 | 81,403 |
Less valuation allowances | (28,369) | (28,369) | (61,668) |
Deferred income tax assets | 23,914 | 23,914 | 19,735 |
Deferred income tax liabilities: |  |  |  |
Property, plant and equipment | 12,530 | 12,530 | 14,443 |
Tax on unremitted earnings | 14,935 | 14,935 |  |
Deferred income tax liabilities | 27,465 | 27,465 | 14,443 |
Net deferred income tax liabilities | $ 3,551 | $ 3,551 |  |
Net deferred income tax assets |  |  | $ 5,292 |

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