Income Taxes - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018
Deferred tax assets
Accrued liabilities	$ 16,686	$ 16,828
Accrued bonuses	2,308	724
Other assets and liabilities	16,244	10,705
Equity awards	7,196	5,862
Lease liability	30,756
Other	2,418	2,482
Net operating losses	8,205	1,555
Foreign tax credit carryforwards	10,049	7,230
Total deferred tax assets	93,862	45,386
Valuation allowances	(17,303)	(8,183)
Total deferred tax assets, net of valuation allowances	76,559	37,203
Deferred tax liabilities
Deferred expenses	(9,521)	(5,970)
Accelerated depreciation	(27,299)	(24,239)
Goodwill	(9,510)	(12,645)
Right-of-use asset	(30,257)
Other	(782)	(1,064)
Total deferred tax liabilities	(77,369)	(43,918)
Net deferred liability	(810)	(6,715)
Other tax disclosures
Net operating loss carryovers	6,600
Valuation allowance related to net operating losses	$ 6,600
Expiration term of foreign tax credit carryforwards	10 years
Foreign tax authority
Other tax disclosures
Net operating loss carryovers	$ 6,200	5,300
Valuation allowance related to net operating losses	500	$ 600
Foreign tax credit carryforwards
Deferred tax assets
Valuation allowances	$ (10,000)