Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands	9 Months Ended
Sep. 28, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Refund liability	$ 288
Right to recover product	$ 181
Maximum amortization period, capitalized contract costs	1 year
Minimum
Disaggregation of Revenue [Line Items]
Payment term for contracts with customers	20 days
Maximum
Disaggregation of Revenue [Line Items]
Payment term for contracts with customers	60 days

Revenue, Payment Term For Contracts With Customers

No definition available.

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- Definition

Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131251-203054

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- Definition

Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 55
-Paragraph 27
-URI http://asc.fasb.org/extlink&oid=108792157&loc=SL49130611-203046-203046

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- Definition

Amount of right to recover product from customer on settling refund liability.

+ References

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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