Income Taxes - Deferred Income Taxes (Details) - USD ($) $ in Thousands	Jan. 02, 2021	Dec. 28, 2019
Deferred tax assets:
Net operating loss carryforwards	$ 6,839	$ 7,912
Tax credit carryforwards	22,421	14,755
Stock-based compensation	2,683	2,619
Intangible assets	9,802	7,135
Fixed assets	261	289
Capitalized research and development	1,237	1,735
Deferred income on shipments to distributors	3,099	4,018
Leases	6,335	3,446
Accrued liabilities and other	7,652	7,374
Deferred tax assets	60,329	49,283
Less: Valuation allowance	(5,311)	(4,486)
Deferred tax assets, net	55,018	44,797
Deferred tax liabilities:
Intangible assets	16,758	16,621
Fixed assets	8,473	4,969
Leases	5,999	3,166
Debt	21,674	5,741
Prepaid expenses and other	4,919	2,424
Deferred tax liabilities	57,823	32,921
Net deferred tax liabilities	$ (2,805)
Net deferred tax assets		$ 11,876