Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Deferred tax asset, valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 493,157	$ 205,241	$ 200,476
Additions	122,878	355,166	31,759
Reductions	(131,201)	(67,250)	(26,994)
Ending balance	484,834	493,157	205,241
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	1,821	892	772
Additions	2,184	929	138
Reductions	0	0	(18)
Ending balance	$ 4,005	$ 1,821	$ 892