Income Taxes - Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Deferred tax assets
Revenue reserves	$ 21,355	$ 17,420
Accruals and other liabilities	8,225	7,844
Operating lease liabilities	14,117	0
Tax credits and net operating loss carryforwards	8,814	7,781
Stock-based compensation	4,981	4,975
Other	5,068	4,087
Gross deferred tax assets	62,560	42,107
Valuation allowance	(3,826)	(1,148)	$ (800)
Total deferred tax assets	58,734	40,959
Deferred tax liabilities
Intangible assets	3,838	7,317
Operating lease right-of-use assets	13,249	0
Other	768	668
Total deferred tax liabilities	17,855	7,985
Net deferred tax assets	$ 40,879	$ 32,974