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Summary of Significant Accounting Policies - Additional Information (Details) |  | 3 Months Ended | 6 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 01, 2018 USD ($) | Sep. 28, 2019 USD ($) | Sep. 29, 2018 USD ($) | Jun. 29, 2019 USD ($) | Sep. 28, 2019 USD ($) Segment Sublease | Sep. 29, 2018 USD ($) | Dec. 30, 2018 USD ($) | Dec. 29, 2018 USD ($)
Allowance for doubtful accounts |  | $ 29,000 |  |  | $ 29,000 |  |  | $ 29,000
Reserve for obsolete inventory |  | 0 |  |  | 0 |  |  | 0
Impairment of intangible asset |  |  |  | $ 0 |  |  |  |
Deferred costs |  | 0 |  |  | 0 |  |  | 0
Revenue from contracts |  | 8,891,000 | $ 9,963,000 |  | 21,397,000 | $ 26,710,000 |  |
Advertising expense |  | 168,000 | $ 226,000 |  | $ 623,000 | $ 593,000 |  |
Operating lease, lease expire year |  |  |  |  | 2022 |  |  |
Operating lease right of use assets |  | 2,163,000 |  |  | $ 2,163,000 |  | $ 1,900,000 | $ 0
Operating lease liability |  | $ 2,196,000 |  |  | $ 2,196,000 |  | $ 1,900,000 |
Operating lease, lease renewal term |  | 6 months |  |  | 6 months |  |  |
Weighted average lease term for operating leases |  | 27 months |  |  | 27 months |  |  |
Weighted average discount term |  | 8.00% |  |  | 8.00% |  |  |
Number of reportable segments | Segment |  |  |  |  | 3 |  |  |
Ontario, Canada |  |  |  |  |  |  |  |
Number of sub leases | Sublease |  |  |  |  | 1 |  |  |
Topic 606 |  |  |  |  |  |  |  |
Adjustments to retained earnings | $ 0 |  |  |  |  |  |  |
Technology Intangibles |  |  |  |  |  |  |  |
Estimated useful life of intangible assets |  |  |  |  | 7 years |  |  |
Minimum |  |  |  |  |  |  |  |
Operating lease, lease term |  | 2 years |  |  | 2 years |  |  |
Minimum | Domain Name and Marketing |  |  |  |  |  |  |  |
Estimated useful life of intangible assets |  |  |  |  | 3 years |  |  |
Minimum | Software |  |  |  |  |  |  |  |
Estimated useful life of intangible assets |  |  |  |  | 3 years |  |  |
Minimum | Customer Relationships |  |  |  |  |  |  |  |
Estimated useful life of intangible assets |  |  |  |  | 7 years |  |  |
Maximum |  |  |  |  |  |  |  |
Operating lease, lease term |  | 3 years |  |  | 3 years |  |  |
Federal Deposit Insurance Corporation insured per institution |  |  |  |  | $ 250,000 |  |  |
Maximum | Domain Name and Marketing |  |  |  |  |  |  |  |
Estimated useful life of intangible assets |  |  |  |  | 20 years |  |  |
Maximum | Software |  |  |  |  |  |  |  |
Estimated useful life of intangible assets |  |  |  |  | 5 years |  |  |
Maximum | Customer Relationships |  |  |  |  |  |  |  |
Estimated useful life of intangible assets |  |  |  |  | 15 years |  |  |
Building and Improvements | Minimum |  |  |  |  |  |  |  |
Estimated useful life of property and equipment |  |  |  |  | 18 years |  |  |
Building and Improvements | Maximum |  |  |  |  |  |  |  |
Estimated useful life of property and equipment |  |  |  |  | 30 years |  |  |
Transportation Equipment | Minimum |  |  |  |  |  |  |  |
Estimated useful life of property and equipment |  |  |  |  | 3 years |  |  |
Transportation Equipment | Maximum |  |  |  |  |  |  |  |
Estimated useful life of property and equipment |  |  |  |  | 15 years |  |  |
Machinery and Equipment | Minimum |  |  |  |  |  |  |  |
Estimated useful life of property and equipment |  |  |  |  | 5 years |  |  |
Machinery and Equipment | Maximum |  |  |  |  |  |  |  |
Estimated useful life of property and equipment |  |  |  |  | 10 years |  |  |
Furnishings and Fixtures | Minimum |  |  |  |  |  |  |  |
Estimated useful life of property and equipment |  |  |  |  | 3 years |  |  |
Furnishings and Fixtures | Maximum |  |  |  |  |  |  |  |
Estimated useful life of property and equipment |  |  |  |  | 5 years |  |  |
Office and Computer Equipment | Minimum |  |  |  |  |  |  |  |
Estimated useful life of property and equipment |  |  |  |  | 3 years |  |  |
Office and Computer Equipment | Maximum |  |  |  |  |  |  |  |
Estimated useful life of property and equipment |  |  |  |  | 5 years |  |  |

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