Reclassification (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2020	Dec. 29, 2019	Dec. 30, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Wages and benefits		$ 0	$ 0
Raw materials		0	0
Other production costs		0	0
Total production costs		0	0
Cost of revenue (excluding depreciation and amortization)		989,029	947,884
Selling, General and Administrative Expense		0	0
Sales and marketing	$ 229,040	272,657	271,164
Product development	132,428	105,514	84,098
General and administrative	223,557	206,778	196,621
Depreciation and amortization	$ 62,136	60,661	59,011
Total operating costs		1,634,639	1,558,778
As reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Wages and benefits		424,070	380,678
Raw materials		75,904	76,542
Other production costs		206,381	196,956
Total production costs		706,355	654,176
Cost of revenue (excluding depreciation and amortization)		0	0
Selling, General and Administrative Expense		867,623	845,591
Sales and marketing		0	0
Product development		0	0
General and administrative		0	0
Depreciation and amortization		60,661	59,011
Total operating costs		1,634,639	1,558,778
Reclassification
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Wages and benefits		(424,070)	(380,678)
Raw materials		(75,904)	(76,542)
Other production costs		(206,381)	(196,956)
Total production costs		(706,355)	(654,176)
Cost of revenue (excluding depreciation and amortization)		989,029	947,884
Selling, General and Administrative Expense		(867,623)	(845,591)
Sales and marketing		272,657	271,164
Product development		105,514	84,098
General and administrative		206,778	196,621
Depreciation and amortization		0	0
Total operating costs		$ 0	$ 0