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Income Taxes - Summary of Reconciliations Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 2,839	$ 3,460	$ 2,077
Increases related to current-year tax positions	778	330	326
Increases related to prior-year tax positions	595	87	1,594
Decreases related to prior-year tax positions	0	(1,038)	0
Lapse of statute of limitations	(333)	0	(333)
Settlements with taxing authorities		0
Settlements with taxing authorities	(13)		(204)
Ending balance	$ 3,866	$ 2,839	$ 3,460

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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