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Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Company's adjustments to its uncertain tax position
Balance at beginning of period	$ 7,119	$ 4,590	$ 5,146
Increase for tax positions related to the current year	770	2,891	580
Increase for tax positions related to acquisition	0	1,493	0
Increase (decrease) for tax positions related to prior years	(768)		(523)
Increase for tax positions related to prior years		407
Decrease for settlements with applicable taxing authorities	0	(2,262)	0
Decrease for lapses of statute of limitations	0	0	(613)
Balance at end of period	$ 7,121	$ 7,119	$ 4,590

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Amount of unrecognized tax benefits.

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