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Capital Lease and Financing Obligations (Details) $ in Millions | Dec. 28, 2016 agreement | Sep. 27, 2019 USD ($) | Sep. 28, 2018 USD ($)
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Capital Leased Assets [Line Items] |  |  |
Number of agreements | agreement | 3 |  |
100 Chelmsford Street |  |  |
Capital Leased Assets [Line Items] |  |  |
Lease term | 20 years |  |
144 Chelmsford Street Lease |  |  |
Capital Leased Assets [Line Items] |  |  |
Lease term | 20 years |  |
121 Hale Street |  |  |
Capital Leased Assets [Line Items] |  |  |
Lease term | 14 years |  |
Corporate Facility Leases |  |  |
Capital Leased Assets [Line Items] |  |  |
Lease term | 20 years |  |
Financing obligations associated with leased facility |  | $ 28.2 | $ 28.3
FiBest and Bin Optics |  |  |
Capital Leased Assets [Line Items] |  |  |
Financing obligations associated with leased facility |  | $ 2.3 | $ 1.2
Discount rate |  |  |
Capital Leased Assets [Line Items] |  |  |
Discount rate |  | 0.072 |

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