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Tax cuts and jobs act of 2017, deduction in global intangible low taxed income, percentage.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount of the cumulative effect on retained earnings net of related income tax effect.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of lessee's right to use underlying asset under finance lease.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Amount of lessee's right to use underlying asset under operating lease.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Organization and Description of Business and Accounting Policies - Additional Information (Details) - USD ($)			12 Months Ended
	Dec. 29, 2018	Dec. 22, 2017	Dec. 28, 2018	Dec. 29, 2017	Dec. 30, 2016
Organization And Description Of Business And Accounting Policies [Line Items]
Revenue, Remaining Performance Obligation, Amount			$ 0
Deferred Revenues			0	$ 0	$ 0
Goodwill			$ 1,786,000	$ 1,786,000
U.S. corporate tax rate		35.00%	21.00%	34.00%	34.00%
Percentage of deduction in GILTI			50.00%
Accounting Standards Update 2018-11 \| Subsequent Event
Organization And Description Of Business And Accounting Policies [Line Items]
Finance lease, right-of-use asset	$ 3,300,000
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentMember
Operating lease, right-of-use asset	$ 5,800,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentMember
Operating lease, liability	$ 5,800,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentMember
Accounting Standards Update 2018-11 \| Scenario, Plan
Organization And Description Of Business And Accounting Policies [Line Items]
Cumulative adjustment accumulated deficit	$ (115,000)
Accounting Standards Update 2018-07 \| Scenario, Plan
Organization And Description Of Business And Accounting Policies [Line Items]
Cumulative adjustment accumulated deficit	$ (315,000)
Executive Officers and Employees \| Restricted Stock
Organization And Description Of Business And Accounting Policies [Line Items]
Option Vesting Term			3 years
Board of Directors
Organization And Description Of Business And Accounting Policies [Line Items]
Option Vesting Term			1 year
Board of Directors \| Restricted Stock
Organization And Description Of Business And Accounting Policies [Line Items]
Option Vesting Term			1 year
Minimum \| Restricted Stock
Organization And Description Of Business And Accounting Policies [Line Items]
Requisite Service Period			1 year
Minimum \| Executive Officers and Employees
Organization And Description Of Business And Accounting Policies [Line Items]
Option Vesting Term			3 years
Maximum \| Restricted Stock
Organization And Description Of Business And Accounting Policies [Line Items]
Requisite Service Period			3 years
Maximum \| Executive Officers and Employees
Organization And Description Of Business And Accounting Policies [Line Items]
Option Vesting Term			4 years
Patents And Licenses \| Minimum
Organization And Description Of Business And Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life			3 years
Patents And Licenses \| Maximum
Organization And Description Of Business And Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life			20 years
Customer Relationships
Organization And Description Of Business And Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life			10 years
Developed technology \| Minimum
Organization And Description Of Business And Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life			3 years
Developed technology \| Maximum
Organization And Description Of Business And Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life			10 years
Customer Concentration Risk \| One Customer \| Trade Accounts Receivable
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration Risk, Percentage			36.00%	22.00%
Customer Concentration Risk \| One Customer \| Sales Revenue, Net
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration Risk, Percentage			37.00%	27.00%	20.00%
Vendor Concentration Risk \| Consolidated Accounts Payable
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration Risk, Percentage				12.00%
Vendor Concentration Risk \| Consolidated Accounts Payable \| Maximum
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration Risk, Percentage			10.00%
Vendor Concentration Risk \| Consolidated Purchases
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration Risk, Percentage			10.00%
Vendor Concentration Risk \| Consolidated Purchases \| Maximum
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration Risk, Percentage				10.00%	10.00%