v3.7.0.1

Description of Business and Summary of Significant Accounting Policies - Additional Information (Details) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jul. 01, 2017 | Oct. 01, 2017 USD ($) ft² | Apr. 14, 2016 ft²
Minimum |  |  |
Entity Information [Line Items] |  |  |
Fiscal period duration | 364 days |  |
Maximum |  |  |
Entity Information [Line Items] |  |  |
Fiscal period duration | 371 days |  |
Massachusetts |  |  |
Entity Information [Line Items] |  |  |
Area of real estate property |  |  | 108,743
Massachusetts | Property Subject to Operating Lease |  |  |
Entity Information [Line Items] |  |  |
Area of real estate property |  |  | 10,362
Forecast | Minimum |  |  |
Entity Information [Line Items] |  |  |
Lease obligation | $ |  | $ 4.0 |
Forecast | Maximum |  |  |
Entity Information [Line Items] |  |  |
Lease obligation | $ |  | $ 6.0 |
Forecast | Massachusetts | Property Subject to Operating Lease |  |  |
Entity Information [Line Items] |  |  |
Area of real estate property |  | 25,812 |

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