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Recent Accounting Pronouncements - Textual (Details) - USD ($) $ in Thousands |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Jan. 02, 2017 | Apr. 01, 2017 | Dec. 30, 2017 | Dec. 31, 2016
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Deferred revenue |  |  | $ 1,661 | $ 816
Accounting Standards Update 2016-09 [Member] |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Increase (decrease) in accumulated deficit | $ 100 | $ 1,200 |  |
Adjustments for New Accounting Pronouncement [Member] | Minimum [Member] | Pro Forma [Member] |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Retained earnings related to new standard accounting |  |  | 700 |
Deferred revenue |  |  | 1,500 |
Adjustments for New Accounting Pronouncement [Member] | Maximum [Member] | Pro Forma [Member] |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Retained earnings related to new standard accounting |  |  | 1,200 |
Deferred revenue |  |  | $ 2,500 |

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