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Employee Benefit Plans - Schedule of Defined Contribution, Net of Forfeitures, 401(k) Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2018	Dec. 29, 2017	Dec. 30, 2016
Defined Contribution Pension And Other Postretirement Plans Disclosure [Abstract]
Employer contributions, net of forfeitures	$ 996	$ 764	$ 703

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- References

No definition available.

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

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