Basis of Presentation and Summary of Significant Accounting Policies - Estimated Revenue Recognition (Details) $ in Thousands	Mar. 26, 2019 USD ($)
Accounting Policies [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 1,754
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-03-27
Accounting Policies [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 88
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Accounting Policies [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 112
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-12-30
Accounting Policies [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 110
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-12-29
Accounting Policies [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 109
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-04
Accounting Policies [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 106
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-03
Accounting Policies [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 1,229
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period