Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Dec. 25, 2016
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 17,086	$ 10,028	$ 13,941
Gross additions to tax positions taken during the current year	680	9,009	997
Gross additions to tax positions taken during the prior year	3,019	103	0
Gross reductions to tax positions taken during the prior year	(8,607)	(372)	(3,042)
Reductions from lapse of applicable statutes of limitations	(549)	(1,682)	(1,868)
Balance at end of year	$ 11,629	$ 17,086	$ 10,028