v3.10.0.1

Revenue - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 29, 2018 | Sep. 29, 2018 | Dec. 30, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Accumulated deficit | $ (172,632,000) | $ (172,632,000) | $ (177,145,000)
Deferred revenue, revenue recognized |  | 17,600,000 |
Capitalized contract cost | 900,000 | 900,000 |
Capitalized contract cost, amortization | $ 22,000 | $ 61,000 |
Accounting Standards Update 2014-09 |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Accumulated deficit |  |  | $ 100,000
Customer Contracts |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Weighted-Average Remaining Life (Years) |  | 5 years |

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