Income Taxes - Deferred Taxes and Operating Loss Carryforwards (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Deferred tax assets:
Accrued compensation and related expense	$ 12,842	$ 12,691
Allowance for doubtful accounts	2,023	1,694
Net operating loss carryforwards	335	402
Lease liabilities	39,747	0
Deferred rent, accruals, and other	119	5,656
Total gross deferred tax assets	55,066	20,443
Less: valuation allowance		0
Total deferred tax assets net of valuation allowance	55,066	20,443
Deferred tax liabilities:
Goodwill and other intangible asset amortization	3,650	4,295
Right-of-Use assets	33,012	0
Property and equipment	7,690	6,762
Prepaids and other	548	358
Total deferred tax liabilities	44,900	11,415
Net deferred tax assets	10,166	$ 9,028
U.S. and Foreign
Deferred tax liabilities:
Net operating loss carryforwards	$ 1,100
U.S. and Foreign | Minimum
Deferred tax liabilities:
Deferred Tax Asset Carry Forward Period	20 years